Ch3 Quadratics Flashcards
1
Q
Discriminant
A
b^2 - 4ac
Shows how many roots f(x) has
2
Q
b^2 - 4ac > 0
A
two real roots
3
Q
b^2 - 4ac = 0
A
one real repeated root
4
Q
b^2 - 4ac < 0
A
no real roots
5
Q
Completing the square
A
f(x) = a(x+p)^2 + q
Turning point (-p,q)
6
Q
Straight line equation
A
y-y1 = m(x-x1)
