Question

Which is an equation of a direct proportion?A. $y = 8 \times$$y = \frac{1}{2}x + 4$$y = \frac{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:

$y=8x$