Question

@ganeshie8 @amistre64

Answer 1

@bbbbbbbbbbbbbbbbbb

Answer 2

y = 7(x - 4)^2 + v, with the vertex is known (4,-2).
if you know the general equation of quadratic function y = a(x - h)^2 + k
with h, k is the vertex. take identically, you will get the answer

Answer 3

im confused?

Answer 4

@RadEn