Question

what is the length of $overline{tu}$?

Explanation:

Step1: Identify coordinates

The coordinate of point T is 20 and the coordinate of point U is 22.

Step2: Use distance formula

The distance between two points on a number - line is given by \(d=\vert x_2 - x_1\vert\). Here, \(x_1 = 20\) and \(x_2=22\), so \(d=\vert22 - 20\vert\).

Step3: Calculate the value

\(\vert22 - 20\vert=2\).

Answer:

2