Tell whether the equation represents direct variation. If it does find the constant of direct variation. -12 + 8y +12 = 7x.

Given:

The equation is

To find:

The constant of direct variation if the given equation represents direct variation.

Solution:

If y is directly proportional to x, then

           ...(i)

Where, k is the constant of proportionality.

We have,

         ...(ii)

At x=0,

The equation (ii) passes through (0,0). So, it represents a proportional relationship.

On comparing (i) and (ii), we get

Therefore, the constant of proportionality is .

the correct answer is d

hope this

fist on the left goes with the third on the right. second on the left goes with the fourth on the right. third on the left goes with the second on the right. the fourth on the left goes with first on the right