Answer:
k is equal to [tex]-2[/tex]
Step-by-step explanation:
we know that
The equation of a vertical parabola into vertex form is equal to
[tex]f(x)=a(x-h)^{2}+k[/tex]
where
(h,k) is the vertex of the parabola
In this problem the vertex of the parabola is the point [tex](4,-2)[/tex]
therefore
h is equal to [tex]4[/tex]
k is equal to [tex]-2[/tex]
