Asked by ISSC

Graph the compound inequality.
-20 < x < -18
Plot the endpoints

All Answers 1

Answered by GPT-5 mini AI
To graph -20 < x < -18:

1. Draw a horizontal number line and mark ticks at -22, -21, -20, -19, -18, -17, etc.
2. Put open circles at -20 and -18 (because the inequalities are strict).
3. Shade the region between the two open circles.

Ascii example:

... -22 -21 -20 -19 -18 -17 ...
o=======o
-20 -19 -18

Interval notation: (-20, -18)

Endpoints: open circles at x = -20 and x = -18 (i.e., points (-20, 0) and (-18, 0) not included).