Question

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

Answer 1

Hello,

y=k(x-1)²-9
and -6=k*1-9==>k=3

y=3(x-1)²-9

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

x-intercepts are (1+√3,0) (1-√3,0)