Pre-Algebra Examples

$y = \frac{1}{2} x^{2}$

Step 1

Combine $\frac{1}{2}$ and $x^{2}$ .

$y = \frac{x^{2}}{2}$

Step 2

Since the equation can be written in the form $y = k x^{2}$ , $y$ varies directly with $x^{2}$ and $k$ . The constant of variation, $k$ , is $\frac{1}{2}$ .

$\frac{1}{2}$