Question

If y varies directly with x, and if y=5 when x=-0.1, how do you find the direct variation equation?

Answer 1

The direct variation equation is `y = 50x`

Explanation:

A direct variation equation has the form

`y = kx`

To find the value of k, substitute the values of y and x into the equation and the solve for k:

`5 = k(0.1)`

`k = 5/0.1`

`k = 50`