# Chapter 1 - Section 1.1 - Real Numbers - 1.1 Exercises: 74

4

#### Work Step by Step

The easiest way to find distance between two points on a straight line is to subtract the smaller value from the larger one. In this example, you would subtract $(-2.5)$ from $1.5$. This would translate to $1.5-(-2.5)$. When subtracting a negative, you add, so this would become $1.5+2.5$ which equals $4$.

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