91Ó°ÊÓ

The x-intercepts are where the graph crosses the x-axis, and the y-intercepts are where the graph crosses the y-axis.

Then, algebraically,

• an x-intercept is a point on the graph where y is zero, and
• a y-intercept is a point on the graph where x is zero.

More specifically,

• an x-intercept is a point in the equation where the y-value is zero, and
• a y-intercept is a point in the equation where the x-value is zero.

In order to create the table of values use different values of x to solve fory, and graph the values.

Plug in $x=0$in the equation $y=−2x$ and solve for y.

$$\begin{gathered} y=−2\left(0\right) \\ =0 \end{gathered}$$

For $x=1$,

$$\begin{gathered} y=−2\left(1\right) \\ =−2 \end{gathered}$$

For $x=−1$,

$$\begin{gathered} y=−2\left(−1\right) \\ =2 \end{gathered}$$

Therefore, the table thus obtained is:

Graph the equation $y=−2x$by plotting the values from the table and get: