Question

Which of the following equations is of a parabola with a vertex at (3, 0)?
A. y = (x - 3)^2
B. y = (x + 3)^2
C. y = x^2 - 3
D. y = x^2 + 3

Answer 1

I know it isn't D

Answer 2

the general vertex formula is

y = (x - a)^2 + b

where (a,b) is the vertex

Answer 3

if you compare this with the options you should get the right one

Answer 4

b = 0

Answer 5

i dont have an a

Answer 6

yes you do
- the first number in the coordinates of the vertex is a