https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:foundation-algebra/x2f8bb11595b61c86:algebra-overview-history/v/descartes-and-cartesian-coordinates 2022-11-16T04:22:43.7414897Z Intro to the coordinate plane Descartes created a system of two perpendicular axes (the x and y axes) which could be used to plot points in a plane. This enabled the visualization of algebraic equations in geometric form. For example, a linear equation like y = 2x + 1 could be plotted as a line on the coordinate plane, while a quadratic equation like y = x^2 could be plotted as a parabola. This linked algebra and geometry through the use of graphs. Sal Khan video https://cdn.kastatic.org/googleusercontent/b_wyHsydMfQR3qFOjpW-IBcpbheOeQU_SAGUN9VHIcsx48s4w9Qovu-tBH6i6BLEZhIDhfQEu-VpcvP91LLBh4vc Intro to the coordinate plane Descartes created a system of two perpendicular axes (the x and y axes) which could be used to plot points in a plane. This enabled the visualization of algebraic equations in geometric form. For example, a linear equation like y = 2x + 1 could be plotted as a line on the coordinate plane, while a quadratic equation like y = x^2 could be plotted as a parabola. This linked algebra and geometry through the use of graphs. https://cdn.kastatic.org/ka-youtube-converted/N4nrdf0yYfM.mp4/N4nrdf0yYfM.mp4 682 Cartesian Plane https://www.khanacademy.org/math/class-9-tg/x06d55bfa213a79fd:co-ordinate-geometry/x06d55bfa213a79fd:introduction/e/exercise-on-nomenclature-9th 2026-04-10T11:10:35.111735247Z Cartesian plane nomenclature Exercise on nomenclature supriya exercise https://www.khanacademy.org/math/class-9-tg/x06d55bfa213a79fd:co-ordinate-geometry/x06d55bfa213a79fd:plotting-a-point-on-the-cartesian-plane/v/points-and-quadrants-example-indian-accent 2025-06-04T10:04:13.13703146Z Points and quadrants example Plotting points on a graph involves moving along the x and y axes. Positive x-values move right, negative x-values move left. Positive y-values move up, negative y-values move down. The graph is divided into four quadrants, helping us locate points easily. Kalakrit (Dubbing) video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Points and quadrants example Plotting points on a graph involves moving along the x and y axes. Positive x-values move right, negative x-values move left. Positive y-values move up, negative y-values move down. The graph is divided into four quadrants, helping us locate points easily. https://cdn.kastatic.org/ka-youtube-converted/3Ks6z0JiCS4.mp4/3Ks6z0JiCS4.mp4 116 Cartesian Plane https://www.khanacademy.org/math/cc-sixth-grade-math/x0267d782:coordinate-plane/cc-6th-coordinate-plane/e/graphing_points_2 2026-04-01T22:40:57.156640398Z Quadrants on the coordinate plane Practice identifying the quadrant or axis where points on the coordinate plane are located. Ben Eater exercise