Given f (x) = 3x-1 and 9 (x) = 2x-3, for which value of x does g (x) = f (2)

Question

Evelyn Clay

Mathematics

14 February, 06:02

Given f (x) = 3x-1 and 9 (x) = 2x-3, for which value of x does g (x) = f (2)

+3

Answers (1)

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Yadira Wyatt · Answer 1

f (2) is a constant, fill in x=2 for 3x-1 and find that f (2) = 5

So you have to solve g (x) = 5, ie., 2x-3 = 5

So add 3 to both sides and simplify:

2x - 3+3 = 5+3

2x = 8

x = 4