Quadratic Functions Flashcards
1
Q
Roots of a quadratic function
A
ax^2+bx+c=0
2
Q
Intercepts
A
x-intercept where y =0
y-intercept where x=0
3
Q
Coefficient of x^2
A
Positive: minimum value
Negative: maximum value
4
Q
Turning point
A
x: axis of symmetry
y: maximum or minimum value
5
Q
Quadratic formula
A
____________
x=-b/b^2-4ac/2a
6
Q
Writing quadratic expression as a perfect square
A
a(X+h)^2+k
h=b/2a
k=4ac-b^2/4a
7
Q
Simultaneous equations- one linear one quadratic
A
Substitute the linear equation into the quadratic equation
