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algebra 2 help?

Are f and g inverses of each other?
f(x) = (63x + 42)/49
g(x) = (7/9)x - 2/5

A no
B yes

2007-05-31 07:11:03 · 2 answers · asked by Nathan C 1 in Science & Mathematics ➔ Mathematics

2 answers

y = 63x/49 + 42/49 = 9x/7 + 6/7

9x/7 = y - 6/7
x = 7y/9 - 6/9 = 7y/9 - 2/3

Nope. Not inverses.

2007-05-31 07:17:42 · answer #1 · answered by TychaBrahe 7 · 0⤊ 0⤋

No, they're not.

2007-05-31 07:16:23 · answer #2 · answered by Alex 2 · 0⤊ 0⤋

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