Pre-Algebra Examples

$\frac{x - 4}{9}$

Step 1

Write $\frac{x - 4}{9}$ as an equation.

$y = \frac{x - 4}{9}$

Step 2

Simplify $\frac{x - 4}{9}$ .

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Step 2.1

Split the fraction $\frac{x - 4}{9}$ into two fractions.

$y = \frac{x}{9} + \frac{- 4}{9}$

Step 2.2

Move the negative in front of the fraction.

$y = \frac{x}{9} - \frac{4}{9}$

Step 3

The given equation $y = \frac{x}{9} - \frac{4}{9}$ can not be written as $y = k x^{2}$ , so $y$ doesn't vary directly with $x^{2}$ .

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