Finite Math Examples

$3 x \cdot 1 + 11 x \cdot 2 - 29 x \cdot 3 = - 17$ , $2 x \cdot 1 + 24 x \cdot 2 - 62 x \cdot 3 = - 4$ , $x \cdot 1 + 7 x \cdot 2 - 18 x \cdot 3 = - 4$

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.

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