Question

How do you find the "a" of a parabola?

Answer 1

Is a the focus?

Answer 2

y=a(x+h)^2+k

Answer 3

take the vertex (h,k) and one point (x,y)
sub those values into the above given by Josettewould
and solve for a

Answer 4

sorry, I did not realizer the asker had the formula. Good job though

Answer 5

do you have a vertex and a point so I can show you?