Finite Math Examples

$5 x - 5 y + 7 z = 8$ , $- 10 x + 10 y - 14 z = - 14$ , $10 x - 10 y + 14 z = 14$

Step 1

When three variable quantities have a constant ratio, their relationship is called a direct variation. It is said that one variable varies directly as the other two vary. The formula for direct variation is $y = k x z^{2}$ , where $k$ is the constant of variation.

$y = k x z^{2}$

Step 2

Solve the equation for $k$ , the constant of variation.

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