Precalculus Examples

$y = \frac{1}{3} x - 2$ , $- 2 x + y = - 7$

Step 1

Combine $\frac{1}{3}$ and $x$ .

$y = \frac{x}{3} - 2$

$- 2 x + y = - 7$

Step 2

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

$y = - 7 + 2 x$

$y = \frac{x}{3} - 2$

Step 3

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

$(3, - 1)$

Step 4