Question

Which is an equation of a direct proportion

Answer 1

The equation of a direct proportion is: y=8x

So, the correct option is Option A.

Explanation:

We need to find equation of direct proportion.

If y varies directly with x then:

`y\:\alpha \:x\\y=kx`

Where k is constant of proportionality

So, Now Looking at all the options and comparing it with the general equation of direct proportion
`y=kx`

We get the correct option: y=8x

All other options are not according to direct equation

The equation of a direct proportion is: y=8x

So, the correct option is Option A.