Question

Which is an equation of a direct proportion?A.
`y = 8 *`
`y = (1)/(2)x + 4`
`y = (12)/(x)`
`y = 4x - 4`

Answer 1

The general form of a equation with direct proportion is:

`y=kx`

k is a constant

Because y increase when x increase, and y decrease when x decrease.

Then, of the given options the direct proportion is:

`y=8x`