Functions (& quadratics)

Question 1

What do the different discriminants mean?

Answer 1

+ (positive discriminant) = 2 real distinct roots

0 (discriminant is 0) = 1 real root or 2 equal roots (i.e. the discriminates are the same)

• (negative discriminant) = no real roots

Question 2

Drawing of graphs for different discriminant test results

Answer 2