Question

Sarah's carry-on bag weighed too much. Sarah says the inequality s < 25 can be used to represent her situation where ​​s is the possible weight of her bag, in pounds.



Create the graph that represents Sarah's inequality.

Answer 1

To graph s < 25 on a number line:

1. Draw a horizontal number line and mark 0, 5, 10, 15, 20, 25, 30 (or at least 20 and 25).
2. Put an open circle at 25 (because 25 is not included).
3. Shade the line to the left of 25 and add an arrow pointing left to show all numbers less than 25 are included.

Text/interval form: s < 25 or (-∞, 25)

ASCII example:

... 20 21 22 23 24 25 26 ...
----|----|----|----|----| o |----
<====================

(The open circle at 25, shading/arrow to the left.)