Question

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

Answer 1

the answer is c

Explanation:

Answer 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

`y\propto x`

The equation of this proportional relationship is

`y=kx`

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.

`y=2x`

The equation equation is
`y=2x`. Therefore, the correct option is C.