For any linear function f(x)=mx+b when does kf(x)=f(kx)

a- when b=0
b- when b=1
c when m=0
d when m=1

hello from mrbilldoesmath!

answer:

the domain is the set { -2, 0, 2, 3}

discussion:

the domain is the set of x values in the ordered pairs (x,y). taking the x, or first component, of each ordered pair gives   -2, 0, 2, 3.

you,

mrb

what is the answer?