Question

find the length of the segment ab
the length is (type an integer or a decimal )

Explanation:

Step1: Identify coordinates

The coordinate of point A is 3 and the coordinate of point B is 7.

Step2: Use distance formula

The distance between two points on a number - line is given by \(d = |x_2 - x_1|\), where \(x_1\) and \(x_2\) are the coordinates of the two points. Here, \(x_1 = 3\) and \(x_2 = 7\), so \(d=|7 - 3|\).

Step3: Calculate the value

\(|7 - 3|=|4| = 4\).

Answer:

4