Finite Math Examples

$- 10 x - 9 y - z = 14$ , $- 6 x - 15 y - 2 z = 55$ , $8 x + 9 y + z = - 20$

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.

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