Precalculus Examples

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

Step 1

Combine $\frac{1}{4}$ and $x$ .

$y = \frac{x}{4} - 2$

$- 2 x + y = 5$

Step 2

Add $2 x$ to both sides of the equation.

$y = 5 + 2 x$

$y = \frac{x}{4} - 2$

Step 3

Create a graph to locate the intersection of the equations. The intersection of the system of equations is the solution.

$(- 4, - 3)$

Step 4