#1**+1 **

Vertex form of a parabola :

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

First one: y = a (x-4)^2 -2 You are given a convenient point on the parabola to find 'a'

Let's sub 7,3 into the equation

3 = a (7-4)^2 -2 solve for a = 5/9

y = 5/9 (x-4)^2 -2

ElectricPavlov
Feb 22, 2018