Question

For the function
f
(
x
)
=
a
(
b
x
)
,
a
and
b
are non-zero rational numbers.



What is the
y
-coordinate of the
y
-intercept of
f
(
x
)
?



A.
a

B.
b

C.
0

D.
1

Answer 1

f(0) = a(b·0) = a·0 = 0, so the y-intercept is 0. Answer: C.