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Thansk!

 Feb 22, 2018
edited by Guest  Feb 22, 2018
edited by Guest  Feb 22, 2018
 #1
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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  

 Feb 22, 2018

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