SOLUTION: Find a formula for the quadratic function whose graph has y-intercept at y=15 and zeros at x=1 and x=4.

Algebra ->  Quadratic Equations and Parabolas -> SOLUTION: Find a formula for the quadratic function whose graph has y-intercept at y=15 and zeros at x=1 and x=4.       Log On


   

Question 1148408: Find a formula for the quadratic function whose graph has y-intercept at y=15 and zeros at x=1 and x=4.
Answer by josgarithmetic(39615) About Me  (Show Source):
You can put this solution on YOUR website!
y=a%28x-1%29%28x-4%29

a=y%2F%28%28x-1%29%28x-4%29%29

point (0,15)
a=15%2F%28%280-1%29%280-4%29%29
a=15%2F%28%281%29%284%29%29
a=15%2F4

highlight%28y=%2815%2F4%29%28x-1%29%28x-4%29%29