Question

The graph of which equation has a vertex of (3, 0)?

a. y = (x + 3)^2

b. y = (x – 3)^2 + 3

c. y = 2(x + 3)^2

d. y = 2(x – 3)^2

Answer 1

http://www.mathwarehouse.com/geometry/parabola/images/standard-vertex-forms.png

look at the "vertex form"