Precalculus: Mathematics for Calculus, 7th Edition

Published by Brooks Cole
ISBN 10: 1305071751
ISBN 13: 978-1-30507-175-9

Chapter 1 - Section 1.9 - The Coordinate Plane; Graphs of Equations; Circles - 1.9 Exercises - Page 103: 45

Answer

-2

Work Step by Step

To find the y value of a point that is equidistant between two points we find the middle. The formula we will use is: $\frac{x_{1}+x_{2}}{2}, \frac{y_{1}+y_{2}}{2}$ So plugging in our numbers into the formula we have: $\frac{5+1}{2}, \frac{(-5)+1}{2}$ $\frac{6}{2}, \frac{-4}{2}$ $(3, -2)$ So the y-value of an equidistant point is -2.
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