Question

Which of the following equations does not represent a proportional relationship?

a) y=2xy is equal to 2 x
b) y=12xy is equal to 1 half x
c) y=3x+4y is equal to 3 x plus 4
d) y=0.3x

Answer 1

The equation that does not represent a proportional relationship is y = 3x + 4y = 3x + 4.

Step-by-step explanation:

The equation that does not represent a proportional relationship is option C, y = 3x + 4y = 3x + 4. A proportional relationship is described by an equation of the form y = kx, where k is the proportionality constant. In option C, the equation includes both x and y terms on the right side, which means it is not in the form of a direct proportion. In the other options, A, B, and D, the equations are in the form of a direct proportion, where y is directly proportional to x or a constant times x.