Question

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

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does g(x) = f(2)?

X= 3/2

X= 2

X= 5/2

X = 4

Answer 1

x = 4

Explanation:

`f(x)=3x-1\\g(x)=2x-3`

substitute x = 2 into f(x):

`f(2)=(3 *2)-1=5`

equate g(x) with found value for f(2) and solve for x:

`g(x)=f(2)\\2x-3=5\\2x=8\\x=4`