Inequalities And The Diacriminangmt

Question 1

How can linear inequalities be solved?

Answer 1

Using straight algebra, doesn’t need a graph

Question 2

How do you solve non linear graphs?

Answer 2

Treat it as an equation and find the critical values (roots) then sketch a graph to see which regions satisfy the inequality

Question 3

What is the discriminant?

Answer 3

B^2 - 4ac this can be used to see how many roots a quadratic equation will have:

Less than 0: no real roots
More than 0: two real roots
Equal to 0: 1 repeated root