Finite Math Examples

$\frac{7}{4} x - \frac{5}{2} y = 2$ , $\frac{1}{4} x + \frac{7}{2} y = 8$

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.

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