https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:forms-of-linear-equations/x2f8bb11595b61c86:graphing-slope-intercept-equations/v/graphing-a-line-in-slope-intercept-form 2021-06-21T15:29:13Z Graph from slope-intercept equation To graph a linear equation in slope-intercept form, we can use the information given by that form. For example, y=2x+3 tells us that the slope of the line is 2 and the y-intercept is at (0,3). This gives us one point the line goes through, and the direction we should continue from that point to draw the entire line. Sal Khan video https://cdn.kastatic.org/googleusercontent/jjE5XuBSumnBo1Z-dEubApFfOW0p2JE5PEI9X9p6ENJjp7JP1TA6Ah-cT2eZRu5mAMhLOSeNsFs5cRi6UWJ85Yb_ng Graph from slope-intercept equation To graph a linear equation in slope-intercept form, we can use the information given by that form. For example, y=2x+3 tells us that the slope of the line is 2 and the y-intercept is at (0,3). This gives us one point the line goes through, and the direction we should continue from that point to draw the entire line. https://cdn.kastatic.org/ka-youtube-converted/uk7gS3cZVp4.mp4/uk7gS3cZVp4.mp4 181 Linear functions https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:forms-of-linear-equations/x2f8bb11595b61c86:graphing-slope-intercept-equations/e/graph-from-slope-intercept-equation 2026-04-07T23:17:37.123726494Z Graph from slope-intercept form Practice drawing the graph of a line given in slope-intercept form. For example, graph y = 3x + 2. Tomer Gal exercise https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:forms-of-linear-equations/x2f8bb11595b61c86:graphing-slope-intercept-equations/a/graphing-lines-review 2022-04-27T20:03:03.137387157Z Graphing lines from slope-intercept form review Slope intercept form is y=mx+b, where m is slope and b is the y-intercept. We can use this form of a linear equation to draw the graph of that equation on the x-y coordinate plane. article https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:forms-of-linear-equations/x2f8bb11595b61c86:graphing-slope-intercept-equations/a/graphing-slope-intercept-form 2022-04-27T20:03:03.137387157Z Graphing slope-intercept form Learn how to graph lines whose equations are given in the slope-intercept form y=mx+b. article https://www.khanacademy.org/math/algebra-home/alg-linear-eq-func/alg-x-and-y-intercepts/v/graphing-using-x-and-y-intercepts 2020-07-26T05:38:42Z Graphing using intercepts (old) An old video of Sal where he draws the line y=3x-9 by finding its x- and y-intercetps. Sal Khan video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Graphing using intercepts (old) An old video of Sal where he draws the line y=3x-9 by finding its x- and y-intercetps. https://cdn.kastatic.org/ka-youtube-converted/6m642-2D3V4.mp4/6m642-2D3V4.mp4 238 Linear functions https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:linear-equations-graphs/x2f8bb11595b61c86:x-intercepts-and-y-intercepts/a/intercepts-of-lines-review-x-intercepts-and-y-intercepts 2022-04-27T20:03:03.137387157Z Intercepts of lines review (x-intercepts and y-intercepts) The x-intercept is where a line crosses the x-axis, and the y-intercept is the point where the line crosses the y-axis. Thinking about intercepts helps us graph linear equations. article https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:linear-equations-graphs/x2f8bb11595b61c86:x-intercepts-and-y-intercepts/v/finding-x-intercept-of-a-line 2021-06-21T15:29:09Z x-intercept of a line Sal determines the x-intercept of a linear equation from a graph. Afterwards, he checks his work by plugging values back into the equation. Sal Khan video https://cdn.kastatic.org/googleusercontent/ZgkWb4lUVg9gGg0kiZR6gSfde5nW2wSK88jS4nydaqTKe_Sz-vG1znCO-O5kpJDFGdDv1TdQR5Qvp74C1gaxr5Y8 x-intercept of a line Sal determines the x-intercept of a linear equation from a graph. Afterwards, he checks his work by plugging values back into the equation. https://cdn.kastatic.org/ka-youtube-converted/xiIQQNufFuU.mp4/xiIQQNufFuU.mp4 103 Linear functions https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:linear-equations-graphs/x2f8bb11595b61c86:x-intercepts-and-y-intercepts/e/linear-function-intercepts 2026-04-07T22:23:57.656416987Z Intercepts from a graph Look at the graph of an equation to find x-intercepts and y-intercepts Tomer Gal exercise https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:forms-of-linear-equations/x2f8bb11595b61c86:standard-form/v/plotting-x-y-relationships 2022-11-16T04:22:43.7414897Z Graphing a linear equation: 5x+2y=20 We can graph a the linear equation like 5x + 2y = 20 by rewriting it so y is isolated, then plugging in x values to find their corresponding y-values in a table. We can then graph those x-y pairs as points on a graph. Sal Khan video https://cdn.kastatic.org/googleusercontent/7yJGdQjBdDMseTIPkIpXZxn7GUpJn5TMzpUIYAKsNY0TpBXBHGhtX0u1feQq-pW_wqs1jIv0scQ26dpCPReFDMiX1g Graphing a linear equation: 5x+2y=20 We can graph a the linear equation like 5x + 2y = 20 by rewriting it so y is isolated, then plugging in x values to find their corresponding y-values in a table. We can then graph those x-y pairs as points on a graph. https://cdn.kastatic.org/ka-youtube-converted/86NwKBcOlow.mp4/86NwKBcOlow.mp4 269 Linear functions https://www.khanacademy.org/math/math-1-illustrative-math-aligned/x193529144fa1e1f6:linear-equations-and-systems/x193529144fa1e1f6:equations-and-their-graphs-optional/v/graphs-of-linear-equations 2020-08-25T18:06:02Z Graphing a linear equation: y=2x+7 Learn how to create a graph of the linear equation y = 2x + 7. Sal Khan video https://cdn.kastatic.org/googleusercontent/XYwg1vPlZG5HWWPhZNvx7nQdglN2JFhr87LLpQlDMpTvK3YSQoP73Gzlz_msZgZx0v6tgReECIYcGCU26QU103QO Graphing a linear equation: y=2x+7 Learn how to create a graph of the linear equation y = 2x + 7. https://cdn.kastatic.org/ka-youtube-converted/rgvysb9emcQ.mp4/rgvysb9emcQ.mp4 790 Linear functions https://www.khanacademy.org/math/cc-eighth-grade-math/cc-8th-linear-equations-functions/8th-linear-functions-modeling/v/slope-example 2021-06-30T18:10:16Z Linear equations word problems: earnings Sal finds the slope of a linear relationship between the number of work hours and the money earned. He then interprets what this slope means in that context. Sal Khan video https://cdn.kastatic.org/googleusercontent/zwVERuDRmAoSRDXIv1tcn3bgaJU3-G7USrVlMSxZBeiFdpGalm9RmV-wTuHRR1lBKugLDdWH8sQw0SKmoJdy4CIF Linear equations word problems: earnings Sal finds the slope of a linear relationship between the number of work hours and the money earned. He then interprets what this slope means in that context. https://cdn.kastatic.org/ka-youtube-converted/jTCZfMMcHBo.mp4/jTCZfMMcHBo.mp4 243 Linear functions https://www.khanacademy.org/math/cc-eighth-grade-math/cc-8th-linear-equations-functions/8th-linear-functions-modeling/v/interpreting-features-of-linear-functions-example-2 2021-06-30T18:10:12Z Linear equations word problems: volcano Sal finds the y-intercept and the slope of a linear relationship representing someone climbing a volcano. He then interprets what the y-intercept and the slope mean in that context. Sal Khan video https://cdn.kastatic.org/googleusercontent/XuygUppD6g8aQ05KV7SrZpEr5PIXhN7Cg0Gq2y4F9RFTRG5NswGCQbgDXyYtgWcFrid95BRWGXYiIe27veD9Brs Linear equations word problems: volcano Sal finds the y-intercept and the slope of a linear relationship representing someone climbing a volcano. He then interprets what the y-intercept and the slope mean in that context. https://cdn.kastatic.org/ka-youtube-converted/eLUmpX_h9sw.mp4/eLUmpX_h9sw.mp4 358 Linear functions https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:linear-equations-graphs/x2f8bb11595b61c86:applying-intercepts-and-slope/e/interpreting-tables 2024-06-26T21:44:31.760146908Z Linear equations word problems: tables Solve word problems about real world relationships that are given in tables. Tomer Gal exercise https://www.khanacademy.org/math/algebra-home/alg-linear-eq-func/alg-interpreting-linear-functions/v/interpreting-linear-formulas-1 2020-12-28T16:56:58Z Linear equations word problem: marbles Sal finds the y-intercept and the slope of a linear relationship representing someone filling a glass tank with marbles. He then interprets what the y-intercept and the slope mean in that context. video https://cdn.kastatic.org/googleusercontent/S23E5aZqd56gpVNwMabNn-XFO7UPxsf89pO7CB3YmHje17ti-gH7ocm8DVmPWJcPqVh7xY8T-ulmTbatkJb27M8B Linear equations word problem: marbles Sal finds the y-intercept and the slope of a linear relationship representing someone filling a glass tank with marbles. He then interprets what the y-intercept and the slope mean in that context. https://cdn.kastatic.org/ka-youtube-converted/deKCm28TkRo.mp4/deKCm28TkRo.mp4 160 Linear functions https://www.khanacademy.org/math/cc-eighth-grade-math/cc-8th-linear-equations-functions/8th-linear-functions-modeling/v/interpreting-features-of-linear-functions-example 2021-06-30T18:10:10Z Linear graphs word problem: cats Sal finds the y-intercept and the slope of a linear relationship representing someone accumulating cats! He then interprets what the y-intercept and the slope mean in that context. Sal Khan video https://cdn.kastatic.org/googleusercontent/dfMZcCcp1MGCOUcu94PLAKK-kWy2h44RFTIBaD3wJUpiSNEzGuR0HZAZGayiggSuZpe3KZgt2u75FY7xw4Hc8EcAcg Linear graphs word problem: cats Sal finds the y-intercept and the slope of a linear relationship representing someone accumulating cats! He then interprets what the y-intercept and the slope mean in that context. https://cdn.kastatic.org/ka-youtube-converted/qo5jU_V6JVo.mp4/qo5jU_V6JVo.mp4 163 Linear functions https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:linear-equations-graphs/x2f8bb11595b61c86:applying-intercepts-and-slope/e/interpreting-linear-graphs 2026-05-04T16:10:46.51963925Z Linear equations word problems: graphs Solve word problems about real world relationships that are given in graphs. Tomer Gal exercise https://www.khanacademy.org/math/algebra-home/alg-linear-eq-func/alg-linear-models-word-problems/v/linear-models-1 2026-04-15T07:30:36.105946814Z Linear models word problem: book Sal solves a word problem about a person reading a book. The solution involves the modeling of the situation as a linear function. video https://cdn.kastatic.org/googleusercontent/43iKxIW46JaDa2Z8wPoznOs9iIpsQfcds3O2mkH3j_BxBpxRVDZ9rc_6OeC-wLT8giyfNSwAYhTq4H0SpW3jpyuT Linear models word problem: book Sal solves a word problem about a person reading a book. The solution involves the modeling of the situation as a linear function. https://cdn.kastatic.org/ka-youtube-converted/W3flX500w5g.mp4/W3flX500w5g.mp4 532 Linear functions https://www.khanacademy.org/math/algebra-home/alg-linear-eq-func/alg-linear-models-word-problems/v/linear-models-2 2026-04-15T07:30:36.105946814Z Linear models word problem: marbles Sal solves a word problem about a person filling a glass tank with marbles. The solution involves the modeling of the situation as a linear function. video https://cdn.kastatic.org/googleusercontent/HO4kis6YSkbC8vzXJJKqZ9lbbcequkXv6qskSv5Ez3XenyymIc4Jk6HU4YNnxDtgF49UZh2gKrLUwEXx4QlhJd-m Linear models word problem: marbles Sal solves a word problem about a person filling a glass tank with marbles. The solution involves the modeling of the situation as a linear function. https://cdn.kastatic.org/ka-youtube-converted/Rq56-OJR964.mp4/Rq56-OJR964.mp4 337 Linear functions https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:forms-of-linear-equations/x2f8bb11595b61c86:intro-to-slope-intercept-form/e/interpreting-features-of-linear-functions 2025-03-01T15:52:37.13987578Z Linear equations word problems Solve word problems about real world relationships that are given in formulas.  Functions are written using function notation. Tomer Gal exercise https://www.khanacademy.org/math/algebra-home/alg-linear-eq-func/alg-interpreting-linear-functions/v/interpreting-linear-formulas-2 2020-12-28T16:56:56Z Linear equations word problem: file transfer Sal finds the y-intercept and the slope of a linear relationship representing a top secret file transfer. He then interprets what the y-intercept and the slope mean in that context. video https://cdn.kastatic.org/googleusercontent/CiGOMyMJJ-kwXzE1-VzizqoT1ft4zsyqLo04zwFE3zyQltbzXSJS8Rjv3uSIrBmluKg3r81mbNA4DPri5uIC4Cf3 Linear equations word problem: file transfer Sal finds the y-intercept and the slope of a linear relationship representing a top secret file transfer. He then interprets what the y-intercept and the slope mean in that context. https://cdn.kastatic.org/ka-youtube-converted/AY8ldIEi3fU.mp4/AY8ldIEi3fU.mp4 155 Linear functions https://www.khanacademy.org/math/cc-eighth-grade-math/cc-8th-linear-equations-functions/8th-linear-functions-modeling/e/constructing-and-interpreting-linear-functions 2026-05-04T16:10:46.51963925Z Linear models word problems Solve general word problems about real-world relationships that can be modeled by linear equations or functions. Tomer Gal exercise https://www.khanacademy.org/math/cc-eighth-grade-math/cc-8th-linear-equations-functions/constructing-linear-models-real-world/v/constructing-linear-functions-1 2021-06-30T18:10:05Z Linear functions word problem: iceberg Sal is given a verbal description of a real-world relationship involving a melting iceberg, and is asked to find the formula of the function that represents this relationship. video https://cdn.kastatic.org/googleusercontent/uAmo5jngH6EcOrO2ixoD0M2Oq9-Moa1JcA2hqPSDJXnFXRsqn_KBpzRWj3-ciWt0qMDNmzF4J7nS0R4-wrioprGT Linear functions word problem: iceberg Sal is given a verbal description of a real-world relationship involving a melting iceberg, and is asked to find the formula of the function that represents this relationship. https://cdn.kastatic.org/ka-youtube-converted/W7H-VcaSSu8.mp4/W7H-VcaSSu8.mp4 395 Linear functions https://www.khanacademy.org/math/cc-eighth-grade-math/cc-8th-linear-equations-functions/constructing-linear-models-real-world/v/constructing-linear-functions-2 2021-06-30T18:10:12Z Linear functions word problem: paint Sal is given a verbal description of a real-world relationship involving a person painting his room, and is asked to find the formula of the function that represents this relationship. video https://cdn.kastatic.org/googleusercontent/6-ejQ_ooxgIKmMAISok3zgyxV7FqvnPctKchKhpnRx8uLzd95DY3Cz7YhTk5xL40AemIOEHg_cOLetyMorkoKH5E Linear functions word problem: paint Sal is given a verbal description of a real-world relationship involving a person painting his room, and is asked to find the formula of the function that represents this relationship. https://cdn.kastatic.org/ka-youtube-converted/5c9N_1PEfHw.mp4/5c9N_1PEfHw.mp4 503 Linear functions https://www.khanacademy.org/math/cc-eighth-grade-math/cc-8th-linear-equations-functions/8th-linear-functions-modeling/v/exploring-linear-relationships 2021-06-30T18:10:16Z Modeling with linear equations: snow Sal uses a linear equation to model the amount of snow on the ground. Sal Khan video https://cdn.kastatic.org/googleusercontent/nCxlTyAV0mhy06TQ_MLrKFiq9rB9EeLXk1oouf9JknSU93wRRtQYq297MPkE7pf9u57vlJIxpsaZHDWt0eTkDOXH Modeling with linear equations: snow Sal uses a linear equation to model the amount of snow on the ground. https://cdn.kastatic.org/ka-youtube-converted/qPx7i1jwXX4.mp4/qPx7i1jwXX4.mp4 298 Linear functions