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: 36

Answer

Quadrants II and IV.

Work Step by Step

We call the upper right quadrant as quadrant I, and count the others in the counterclockwise direction. $\left[\begin{array}{ccc}II&|&I\\--&(0,0)&--\\III&|&IV\end{array}\right]$ Right of the y axis, x-coordinates are positive, left of the y axis, x-coordinates are negative. Above the x-axis, y-coordinates are positive below the x-axis, y-coordinates are negative. In quadrant II, (left/up) x is negative, y is positive. In quadrant IV, (right/down) x is positive, y is negative.
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