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If f(x) = 4x - 2, and f(a)= 18, what is the value of a?
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1 vote
If f(x) = 4x - 2, and f(a)= 18, what is the value of a?

User Jacob K
by
6.8k points

1 Answer

3 votes

Answer:

a= 5

Explanation:

all you are doing is replace f(x) with f(a) then solve for a

remember x and a are the same thing


18=4a-2\\4a=20\\a=5

User Jose Ortiz
by
6.4k points
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