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## 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(16 votes)
- 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.(7 votes)

- who is giving oct SAT?(14 votes)
- 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.(9 votes)

- I get confused how to identify the upper and lower part(4 votes)
- Just do more practice and make sure to watch the videos on the lesson prep, it really helps, goodluck btw!!(4 votes)

- What if the inequality is a vertical line: y </>/>=/<=(infinity)x?(4 votes)
- this is very confusing and i really don't understand I am getting stressed rn(4 votes)
- 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(3 votes)
- How is Sal determining which region would be included?(1 vote)
- Basically, if you see the > sign on an inequality it tells you that you shade the region above the line whereas if you see the < sign on the inequality it tells you that you should shade the region below the line.(5 votes)

- Desmos is the for these graphing math problems. I would recommend everyone to try out Desmos. it's gonna make your life essay.(2 votes)
- How is Sal determining which region would be included?(0 votes)
- if y>mx+c, the upper part of the line is to be shaded and if y<mx+c, shade the lower part of the line.(5 votes)