In Example 9(b), change the −1 to −3 and the 3 to 1 and then write the two forms in which an inequality represents the statement.

Data from Example 9(b)

To state that a number x may be greater than −1 and also less than or equal to 3, we write −1 < x ≤ 3. (It can also be written as x > −1 and x ≤ 3.) This is shown in Fig. 17.4(a). Note the use of the open circle and the solid circle.

Transcribed Image Text:

-4 -2 I 0 2 62 (b) Fig. 17.4 4