Answer:
y = 12x, 12
y = 0.75x, 0.75
y = 1/4 x, 1/4
Step-by-step explanation:
The equation that represents a proportional relationship, or a line, is y=kx, where k is the constant of proportionality.
so y = 12x , k = 12
y = 0.75x, k = 0.75
y = 1/4 x, k = 1/4
are proportional
