bschock2000 bschock2000
  • 22-01-2018
  • Mathematics
contestada

how do you find the x intercepts of a vertex problem

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Edufirst
Edufirst Edufirst
  • 22-01-2018
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.
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