To find the distance he drives, calculate the sum of the distance driven from the house to the library and the distance from the library to the store.
From the graph, it can be seen that coordinate points of locations are given.
The distance between two points (x₁,y₁) and (x₂,y₂) is given by the formula:
![d=\sqrt[]{(x_2-x_1)^2+(y_2-y_1)^2}](https://img.qammunity.org/2023/formulas/mathematics/college/be685jmxw05hm2tq94m5iuge2xjynn1hfn.png)
Use the points (x₁,y₁)=(8,7) and (x₂,y₂)=(8,4) to calculate the distance in miles from the house to the library:
![undefined]()