Question

Find a quadratic function with vertex (4,-5) and containing the point (-3,1)

Answer 1

Since the vertex is known.
f(x)=a(x-4)^2 -5

Answer 2

Now, find a using the given point

Answer 3

f(-3)=1

Answer 4

thanks so much

Answer 5

I don't know why I didn't think of that...