139k views
4 votes
Given: F(x) = 5x - 6 and G(x) = x - 4

F -1 =
(x + 6)/5
-6x + 10
(x + 10)/5

1 Answer

2 votes
You don't need g(x) to find the inverse of f(x). Switch the x and the y in f(x) and solve for the new y. y = 5x -6 turns into x = 5y - 6. Solve for y to get
y= (x+6)/(5), the first choice above.
User Shatora
by
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