Checkpoint: The Distance Formula Solution

Determine the distance between the given points. Round to the nearest hundredth.

$\{A (- 7, - 2.3), B (- 3.4, 8)\}$

$A B = \sqrt{{(- 7 - (- 3.4))}^{2} + {(- 2.3 - 8)}^{2}} = 10.911 A B = 10.91 units$

Note

Q: Why is it unnecessary to plot the points to find the distance?
A: The directions only ask for the distance; not a graph. A graph is not needed when you have two ordered pairs and the distance formula.

You should use a calculator to find the answer to the nearest hundredth.