Pre-Algebra Examples

$f (x) = 2 x - 4 x^{2}$

Step 1

Write $f (x) = 2 x - 4 x^{2}$ as an equation.

$y = 2 x - 4 x^{2}$

Step 2

Reorder $2 x$ and $- 4 x^{2}$ .

$y = - 4 x^{2} + 2 x$

Step 3

When solving for $y$ , $y$ doesn't vary directly with $x^{2}$ .

$y$ doesn't vary directly with $x^{2}$