Question

Suppose a parabola has an axis of symmetry at x = -5, a maximum height of 9 and also passes through the point (-7, 1). Write the equation of the parabola in vertex form.

y=-4(x-5)^2+9
y=-7(x+9)^2-5
y=-0.06(x-5)^2+9
y=-2(x+5)^2+9

Answer 1

HI!!

Answer 2

hello!

Answer 3

if the axis of symmetry is \(x=-5\) then you know it is going to look like \[y=a(x+5)^2+k\]
you can forget about all the other stuff cause you only have one choice now

Answer 4

erm, sorry Im still having trouble =L

Answer 5

Answer: is (D)