4.1: Number Line

Front

What symbol is used for a closed dot when graphing an inequality?

Back

≤, ≥

Front

What symbol is used for an open dot when graphing an inequality?

Back

<, >

Front

What does a closed dot on a number line indicate?

Back

The value is included in the solution set.

Front

What does an open dot on a number line indicate?

Back

The value is not included in the solution set.

Front

How do you graph the inequality a ≥ 11 on a number line?

Back

Draw a closed dot at 11 and shade to the right.

Front

How do you graph the inequality a < 11 on a number line?

Back

Draw an open dot at 11 and shade to the left.

Front

What is the difference between ≤ and < in terms of graphing?

Back

≤ includes the endpoint (closed dot), while < does not (open dot).

Front

If a graph shows a closed dot at -3 and shading to the left, what is the inequality?

Back

a ≤ -3

Front

If a graph shows an open dot at 5 and shading to the right, what is the inequality?

Back

a > 5

Front

What does the inequality a > 11 look like on a number line?

Back

An open dot at 11 with shading to the right.