Question

Given f(2) = 12, which of the following could be an equation of the function?
A. f(x) = 8x – 2
B. f(x) = 4x + 4
C. f(x) = 6x – 4
D. f(x) = –4x – 4

Answer 1

We don't know what this is referring to, so there's no way for us to choose...

Answer 2

oops

Answer 3

hold on

Answer 4

A. f(x) = 8x – 2
f(2) = 8(2) - 2
f(2) = 16 - 2
f(2) = 14
FALSE

B. f(x) = 4x + 4
f(2) = 4(2) + 4
f(2) = 8 + 4
f(2) = 12
TRUE

C. f(x) = 6x – 4
f(2) = 6(2) - 4
f(2) = 12 - 4
f(2) = 8
FALSE

D. f(x) = –4x – 4
f(2) = -4(2) - 4
f(2) = -8 - 4
f(2) = -12
FALSE

Answer 5

Therefore:
B. f(x) = 4x + 4
f(2) = 4(2) + 4
f(2) = 8 + 4
f(2) = 12 TRUE