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14-07-2016
Mathematics

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find the x-intercepts of the parabola with vertex (1, -9) and y intercept at (0, -6).

Respuesta :

15-07-2016

Hello,

The equation of the parabola is
y=k(x-1)²-9
and -6=k(0-1)²-9==>k=3

x-intercepts is:
y=0==> 3(x-1)²-9=0==>(x-1)²=3
==> x=1+√3 or x=1-√3

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