Answer
$(2,-4)$ and $(2,2)$.
Work Step by Step
Let the point(s) be $(2,y)$, its distance to $(-2,-1)$ is $d=\sqrt {(2+2)^2+(y+1)^2}=5$ or $(y+1)^2=9$, thus $y=-1\pm3=-4, 2$ which give answers $(2,-4)$ and $(2,2)$.
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 7: 45
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