Question

The graph of which quadratic equation is shown below?
* a u-shaped graph on a coordinate plane that is opening up and has a vertex of (−2, −9)

y = x2 + 4x − 5
y = x2 − 4x − 5
y = −x2 + 4x − 5
y = −x2 − 4x − 5

Answer 1

\[y=(x+2)^2-9\] is a start

Answer 2

what do i do after that. like i really need an explanation b.c i have absolutely no idea how to do it... @satellite73