Question

Can somone help me and explain how they got their answer please

Answer 1

1a. (6,4) 1b. (3,9)

Explanation:

1b. With the graphing formula

y = a(x-h)^2 + k we know that (h,k) = vertex and with the the quadratic you have y = -2x^2 -6x + 9

Same thing with 1a.

I don't know the last two problems though.