Introductory Algebra for College Students (7th Edition)

Published by Pearson
ISBN 10: 0-13417-805-X
ISBN 13: 978-0-13417-805-9

Chapter 3 - Section 3.1 - Graphing Linear Equations in Two Variables - Exercise Set - Page 220: 48

Answer

$(0,2)$ is not a solution, $(2,0)$ is not a solution, $(0,-2)$ is a solution.

Work Step by Step

An ordered pair (a,b) is a solution of an equation in x and y if, substituting a for x and b for y, we obtain an equation that holds true. Another way of stating this is that (a,b) satisfies the equation. --- $(x,y)=(0,2)$ $(2)+2=0 \qquad$ .... false, not a solution $(x,y)=(2,0)$ $(0)+2=0 \qquad$ .... false, not a solution $(x,y)=(0,-2)$ $(-2)+2=0 \qquad$ .... true, a solution.
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