Answer
$\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$
Work Step by Step
For two points $P_1$ and $P_2$ with coordinates of $(x_1,y_1)$ and $(x_2,y_2)$ respectively, the distance between them is denoted by $d$ where:
$d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$
Precalculus: Concepts Through Functions, A Unit Circle Approach to Trigonometry (3rd Edition)
by Sullivan III, Michael
Published by
Pearson
ISBN 10:
0-32193-104-1
ISBN 13:
978-0-32193-104-7
Chapter F - Foundations: A Prelude to Functions - Section F.1 The Distance and Midpoint Formulas - F.1 Assess Your Understanding - Page 6: 9
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