Graphing Linear Equations: example 11.22

Graph $y = −3 x$ and $y = −3$ in the same rectangular coordinate system.

Work it out on paper first. Then open the solution one step at a time, and stop as soon as you can finish on your own.

Solution
Find three solutions for each equation. Notice that the first equation has the variable $x,$ while the second does not. Solutions for both equations are listed.

The graph shows both equations.

Your turn

The book's Try It right after this example: same idea, new numbers. Only the answer is given.

Graph the equations in the same rectangular coordinate system: $y = −4 x$ and $y = −4 .$

How did it go?