Question

How do you find the x intercepts of a vertex problem

Answer 1

X intercepts means y = 0.

So, just equals the equation to 0 and solve for x.

For example, if the equation is a parabola, y = ax^2 + bx + c, make

ax^2 + bx + c = 0.

You can solve that equation using the quadratic formula:

- b +/- √ [ b^2 - 4(a)(c) ]
x = --------------------------------
2(a)

Replacing a, b and c will give you the roots of the polynomial which are the x-intercepts.