If f of x is equal to 4 x plus 12 is graphed on a coordinate plane, what is the y -intercept of the graph?
Answer
A
16
B
8
C
12
D
4
Explanation
The y-intercept is the value of y when x = 0. Substituting into f(x) = 4x + 12 gives f(0) = 4(0) + 12 = 12. Therefore, the y-intercept is 12, choice C.
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