SOLUTION: Can you help me find the x and y intercepts of the parabola in this equation? y=-x^2+6x+20. I think the y intercept is (0,20) but I can figure if there are x coordinates or not.

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons  -> Quadratic Equation Lesson -> SOLUTION: Can you help me find the x and y intercepts of the parabola in this equation? y=-x^2+6x+20. I think the y intercept is (0,20) but I can figure if there are x coordinates or not.      Log On


   

Question 997389: Can you help me find the x and y intercepts of the parabola in this equation?
y=-x^2+6x+20. I think the y intercept is (0,20) but I can figure if there are x coordinates or not.
Answer by josgarithmetic(39616) About Me  (Show Source):
You can put this solution on YOUR website!
y-intercept?
y=-0%5E2%2B6%2A0%2B20
What is y?

x-intercepts; general formula?
x=%28-6%2B-+sqrt%286%5E2-4%2A%28-1%29%2A20%29%29%2F2

x=%28-6%2B-+sqrt%2836%2B80%29%29%2F2

x=%28-6%2B-+sqrt%28116%29%29%2F2

x=%28-6%2B-+2%2Asqrt%2829%29%29%2F2

highlight%28x=-3%2B-+sqrt%2829%29%29, where y=0.