The equation of a line is represented by y = 3x + 0. Kiki says the line shows a proportional relationship, while Donovan says the line shows a non-proportional relationship. Who is correct?
a
Kiki is correct, because the y-intercept is 0, so the line passes through the origin.
b
Kiki is correct, because the line has a positive slope.
c
Donovan is correct, because the equation contains a zero.
d
Donovan is correct, because the equation is of the form y = mx + b.