Question

find the x-intercepts of the parabola with vertex (-1,-108) and y-intercept (0,-105). Write your answer in this form: (x1,y1),(x2,y2), round to the nearest hundredth.

Answer 1

http://www.mathwarehouse.com/geometry/parabola/images/standard-vertex-forms.png

Answer 2

1. Work out the incomplete vertex form (the constant "a" is still present)
2. Plug in the y-intercept to find "a"
3. Plug in y=0 to find the x-intercept