SOLUTION: Write an equation for the quadratic function whose graph contains the given vertex and point. Vertex (-3, 5), point (3, 113)

Algebra ->  Expressions-with-variables -> SOLUTION: Write an equation for the quadratic function whose graph contains the given vertex and point. Vertex (-3, 5), point (3, 113)      Log On


   

Question 1131891: Write an equation for the quadratic function whose graph contains the given vertex and point.
Vertex (-3, 5), point (3, 113)
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!
Use the vertex form, y=a%28x-h%29%5E2%2Bk
y=a%28x%2B3%29%5E2%2B5
Now use the point to solve for a.
113=a%283%2B3%29%5E2%2B5
113-5=a%286%29%5E2
108=36a
a=108%2F36
a=3

highlight%28y=3%28x%2B3%29%5E2%2B5%29