SOLUTION: Write the equation of a parabola with vertex (-3, 5) passing through (-4, 6). Find the values of x when y=8. i have NO idea where to even begin.

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Question 370709: Write the equation of a parabola with vertex (-3, 5) passing through (-4, 6). Find the values of x when y=8.

i have NO idea where to even begin.
Answer by ewatrrr(10682) About Me  (Show Source):
You can put this solution on YOUR website!


Hi,

Using the vertex form of a parabola, y=a%28x-h%29%5E2+%2Bk where(h,k) is the vertex

vertex (-3, 5)

y = a(x+3)^2 + 5

parabola passes through (-4, 6)

6 = a(-4+3)^2 + 5



6 = a + 5

1 = a

Equation of parabola:

y = 1*(x+3)^2 + 5  Or y =(x+3)^2 + 5