X axis marked from Negative 1.5 to plus 4.5. A line marked on the axis is from Negative 0.75 to plus 2.5.

Question

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

Answer 1

To find the length of the red line segment on the number line, you need to calculate the difference between its endpoints.

The endpoints of the line segment are at \(-0.75\) and \(2.5\).

To calculate the length, use the formula:

\[ \text{Length} = \text{Endpoint at positive} - \text{Endpoint at negative} \]

Substituting in the values:

\[ \text{Length} = 2.5 - (-0.75) = 2.5 + 0.75 = 3.25 \]

So, the length of the red line segment is \(3.25\).