SOLUTION: Write the equation of the quadratic function given the x-intercepts are –4 and 1, and a point (0, – 8) is on the parabola.

Algebra ->  Graphs -> SOLUTION: Write the equation of the quadratic function given the x-intercepts are –4 and 1, and a point (0, – 8) is on the parabola.      Log On


   

Question 1090520: Write the equation of the quadratic function given the x-intercepts are –4 and 1, and a point (0, – 8) is
on the parabola.
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
y=a%28x%2B4%29%28x-1%29
Then,
-8=a%280%2B4%29%280-1%29
-8=a%28-4%29
a=2
So,
y=2%28x%2B4%29%28x-1%29
y=2%28x%5E2%2B3x-4%29
y=2x%5E2%2B6x-8
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