Confirm that f and g are inverses by showing that f(g(x)) = x and g(f(x)) = x.

f(x) = 8/x and g(x) = 8/x

point a is the center of the circle that passes through points e, f, and g and the center of the circle that passes through points x, y, and z.

pay attention in your classes and concentrate the best thing you can do to raise your test scores is to pay attention when you're supposed to be learning the material: in class!

take good notes.

do your homework.

use mnemonics and other tricks.

do practice tests.

note: the best i know.