Calculus 8th Edition

Published by Cengage
ISBN 10: 1285740629
ISBN 13: 978-1-28574-062-1

Appendix B - Coordinate Geometry and Lines - B Exercises - Page A15: 1



Work Step by Step

To find the distance between $(1,1)$ and $(4,5)$, we use the distance formula: $d=\sqrt {(x_{2}−x_{1})^{2}+(y_{2}−y_{1})^{2}}$. We plug in the given x and y values: $d=\sqrt {(4−1)^{2}+(5−1)^{2}}$. We then simplify to arrive at the answer: $d=\sqrt {3^{2}+4^{2}}=\sqrt {25}=5$
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