Chapter 13.2, Problem 42SR

To determine

To find: the measurement of two points $EF$ using number line.

Answer to Problem 42SR

The measurement of $BD=6.$

Explanation of Solution

Given:

  

The coordinates of  $B$ and  $D$ are $-4$ and  $2$ .

Concept used:

Distance should be put in modulus since, distance cannot be negative.

Difference in the coordinate is:

$\text{higher value-lower value}$ .

Calculation:

The coordinates of  $B$ and  $D$ are $-4$ and  $2$ .

Distance of the coordinate can be calculated as:

$\text{higher value-lower value}$ and distance should be put in modulus since, distance cannot be negative.

  $BD=\left|2-\left(-4\right)\right|=6.$

Hence, the measurement of $BD=6.$