sat ii math questions!! (attention math wiz)

CDN_dancer
Sat, 29 Oct 2005 20:18:10 +0000

A) 2.96


Suppose the graph of f(x)=-x^2 is translated 3 units left and 1 unit up. If the resulting graph represents g(x), what is the value of g(-1.6)?
f(x) = a(x-p)^2 + q
The inverse of p, and the value for q make up the x and y coordinates of the vertex. Since the graph is translated 3 units left and 1 unit up, that would make the equation
f(x) = (x+3)^2 + 1
That makes the vertex (-3, 1).

Substitute (-1.6) into the equation to get g(-1.6)