Question

Graph the compound inequality.
x ≥ 10 and x ≤ 20

Answer 1

The solution is all x between 10 and 20, inclusive. In interval notation: [10, 20].

Number-line graph (closed dots at 10 and 20, shaded between):

...----|----|----|----|----|----|----...
8 9 10 11 12 13 14
●════════════════●
10 20

(● = closed dot at 10 and 20; the line between them is shaded.)