Geometry

Question Analysis

This question involves determining the length of a line segment on a number line.

 

Key Concept Explanation

The length of a line segment between two points on a number line is found by taking the absolute value of the difference between their coordinates. If the coordinates of two points are and , the distance . Distance is always non - negative.

 

Step - by - Step Solution

1. Identify the coordinates of points and .

From the number line, the coordinate of point is and the coordinate of point is .

2. Calculate the length of .

Use the formula

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