Blue Book, pg 361, help

gcf101
Thu, 29 Jan 2009 10:46:26 +0000

I’ve never seen a question on inverse functions on the SAT I. In 412/17, for example, you don’t need to know the graph or properties of x = y^2 - 4.

Anyway, reflect the given graph in the line y=x; you’ll get a parabola y=ax^2 - 2, where “a” is some coefficient
Swap x and y and drop a:
x = y^2 - 2.
It’s (A).