Pre-Algebra Examples

$- 5 x^{20} - 7 x^{10} + 15$

Step 1

Write $- 5 x^{20} - 7 x^{10} + 15$ as an equation.

$y = - 5 x^{20} - 7 x^{10} + 15$

Step 2

The given equation $y = - 5 x^{20} - 7 x^{10} + 15$ can not be written as $y = k x^{2}$ , so $y$ doesn't vary directly with $x^{2}$ .

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