Question

Determine of each equation represents a direct variation y equals 4X + 1

Answer 1

The general form of the equation that represents a direct variation between y and x is as follows:

$y=k\cdot x$

Where k is the proportion constant

We will check the given equation:

a) y = 4x + 1

The equation doesn't have the general form

so, the answer is NO

b) y = 7.5x

It is like the general form and k = 7.5

so, the answer is Yes

c) y = (1/15)x

it is like the general form and k = 1/15

so, the answer is Yes

d) y = 6/x

It is not like the general form

So, the answer is No