Precalculus Examples

$4 x + y = 8$ , $y = - 4 x + 8$

Step 1

Subtract $4 x$ from both sides of the equation.

$y = 8 - 4 x$

$y = - 4 x + 8$

Step 2

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

Always true

Step 3