Answer
$5$
Work Step by Step
The distance formula from $P_1(x_1,y_1)$ to $P_2(x_2,y_2)$ is $d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$.
Hence, here:
$d=\sqrt{[2-(-1)]^2+(4-0)^2}
\\=\sqrt{3^2+4^2}
\\=\sqrt{9+16}
\\=\sqrt{25}
\\=5$
Precalculus (10th Edition)
by Sullivan, Michael
Published by
Pearson
ISBN 10:
0-32197-907-9
ISBN 13:
978-0-32197-907-0
Chapter 1 - Graphs - 1.1 The Distance and Midpoint Formulas - 1.1 Assess Your Understanding - Page 7: 24
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