Chapter 2 Linear Equations and Functions - 2.3 Graph Equations of Lines - Guided Practice for Examples 1 and 2 - Page 90: 1

See the graph

Given: $y=-2x$ The y-intercept is $0$, so plot the point $(0, 0)$ where the line crosses the y-axis. The slope is $-2$, so plot a second point $(-2, 4)$. Draw a line through the two points. The red line represents $y=-2x$. The blue line represents $y=x$.