Worked examples
Two examples
Example 1
A graph has an open circle at 3 and an arrow pointing right. Which inequality?
- The arrow points toward larger numbers: x is greater than 3.
- The circle is open, so 3 itself is not included.
Answer: x > 3
Example 2
A graph has a filled circle at −2 and an arrow pointing left. Which inequality?
- The arrow points toward smaller numbers: x is less than −2.
- The circle is filled in, so −2 is included.
Answer: x ≤ −2
Where this is taught: Lines on the Grid, “Inequalities: the same steps, with one exception”
The drill
Ten problems
This drill also has challenge problems. They use the same skill, set up the way the GED test sometimes sets up a problem, so that it looks new at first.
How many:
Tap your answer to each one, then press Check my answers at the bottom.Circle your answer to each one. The answer key, with the reasoning, is on the last page.