Pre-Algebra Examples

y = - 7 x^{2}

$y = - 7 x^{2}$

Step 1

Since the equation can be written in the form

y = k x^{2}

$y = k x^{2}$ ,

y

$y$ varies directly with

x^{2}

$x^{2}$ and

k

$k$ . The constant of variation,

k

$k$ , is

- 7

$- 7$ .

- 7

$- 7$

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⎡ ⎢ ⎣ \begin{matrix} x^{2} & \frac{1}{2} \sqrt{π} & \int x d x \end{matrix} ⎤ ⎥ ⎦

$[\begin{array}{c} x^{2} & \frac{1}{2} \\ \sqrt{π} & \int x d x \end{array}]$