If you're seeing this message, it means we're having trouble loading external resources on our website.

If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.

Digital SAT Math

Course: Digital SAT Math>Unit 2

Lesson 8: Graphs of linear systems and inequalities: foundations

Graphs of linear systems and inequalities — Basic example

Watch Sal work through an easier graphs of linear systems and inequalities problem.

Want to join the conversation?

• This is hard ngl
• If you're writing the DSAT, it would be better if you used the graphing calculator. It makes it easier. Some calculator apps have graphing calculators, especially the ones on laptops.
• who is giving oct SAT?
• i don't get it
• Just watch the sign . If y is <= mx+b then we should shade in lower region from the boundary of line .
same as If y is >= mx+b then we should shade in upper region from the line boundary . After shading both region check the overlapping region which contain both shaded region of two line . Basically that region is the solution for both inequalities.
If you still don't understand then I recommend you to check the Things to remember section of previous page where you can get the concepts.
• I get confused how to identify the upper and lower part
• Just do more practice and make sure to watch the videos on the lesson prep, it really helps, goodluck btw!!
• What if the inequality is a vertical line: y </>/>=/<=(infinity)x?
• this is very confusing and i really don't understand I am getting stressed rn
• y>-3x+3.the shaded line will be the greater side of the inequality.It is better to do with example (1,0).... and use a graph paper/do normally with points.

Take a point on the line and move the point along y axis you will know outside the shaded region all values of y are smaller than inside shaded region
(1 vote)
• i think i got this