Pre-Algebra Examples

$15 x - 10 x$

Step 1

Write $15 x - 10 x$ as an equation.

$y = 15 x - 10 x$

Step 2

Subtract $10 x$ from $15 x$ .

$y = 5 x$

Step 3

The given equation $y = 5 x$ can not be written as $y = k x^{2}$ , so $y$ doesn't vary directly with $x^{2}$ .

$y$ doesn't vary directly with $x$