Which equation represents a proportional relationship that has a constant of proportionality equal to 2? y = x + 2 y = StartFraction x over 2 EndFraction y = 2 x y = 2

Given:

Constant of proportionality = 2

To find:

The equation represents a proportional relationship that has a constant of proportionality equal to 2.

Solution:

If y is proportional to x, then the proportional relationship is

The equation of this proportional relationship is

where, k is the constant of proportionality.

It is given that, constant of proportionality is equal to 2. So, put k=2 in the above equation.

The equation equation is . Therefore, the correct option is C.

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