SOLUTION: The graph of a parabola of the form y = x2 + bx + c crosses the y-axis at - 36 and the x-axis at x = 3. At what other point does the graph cross the x-axis?

Algebra ->  Graphs -> SOLUTION: The graph of a parabola of the form y = x2 + bx + c crosses the y-axis at - 36 and the x-axis at x = 3. At what other point does the graph cross the x-axis?       Log On


   

Question 1157308: The graph of a parabola of the form y = x2 + bx + c crosses the
y-axis at - 36 and the x-axis at x = 3. At what other point does the graph cross the x-axis?
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
Includes points (0, -36) and (3, 0).

0%5E2%2Bb%2A0%2Bc=-36
c=-36

3%5E2%2Bb%2A3-36=0
9%2B3b-36=0
3%2Bb-12=0
b=9

highlight%28y=x%5E2%2B9x-36%29

The other x-intercept is (-12, 0).