Quadratics Flashcards
1
Q
Factored form - x intercept
A
y=0, solve for x
s,0) and (t,0
2
Q
Factored form - y intercept
A
x=0, solve for y
[0, a(-s)(-t)]
3
Q
Factored form - vertex
A
- take average of x intercepts
- sub into equation to find y value
Vx = (s+t)/2
= r
Vy = a(r-s)(r-t)
V = [r, a(r-s)(r-t)]
4
Q
Vertex form - x intercepts
A
y=0, solve for x
+/-root(-k/a) +h, 0
5
Q
Vertex form - y intercept
A
x=0, solve for y
0, a(-h)^2, +k
6
Q
Vertex form - vertex
A
(h, k)
7
Q
Standard form - x intercepts
A
- factor
- quadratic formula
8
Q
Standard form - y intercept
A
(0, c)
9
Q
Standard form - vertex
A
-complete the square
Or:
x = b/-2a
Then sub equation to find y value
10
Q
Factored form
A
y = a(x-s)(x-t)
11
Q
Vertex form
A
y=a(x-h)^2 +k
12
Q
Standard form
A
y = ax^2 +bx+c
13
Q
Physics equation
A
h = 1/2gt^2 +Vt +h
