Question

What is the length of the red line segment on the number line?

A. 2


B. 3 1/2


C. 2 1/2


D. 3

Answer 1

C. 2 1/5

Explanation:

Determining the value of each tick:

• The distance between each number is 1 unit.

• Each tick has the same value, so each tick is 0.25 units.

Finding the value of the endpoints:

• Since each tick is 0.25 units, the first endpoint is at -6.75 and the second endpoint is at -4.25.

Determine the length of the endpoints:

• The length of a line on a line segment is essentially the absolute value of the difference between the endpoints.

The difference between -6.75 and -4.25 is given by:

-4.25 - (-6.75)

-4.25 + 6.75

2.5

Converting 2.5 to a mixed number:

Since 0.5 = 1/2, 2.5 as a mixed number is 2 1/2.

Thus, the answer is C. 2 1/2.