College Algebra (10th Edition)

Published by Pearson
ISBN 10: 0321979478
ISBN 13: 978-0-32197-947-6

Chapter 2 - Section 2.3 - Lines - 2.3 Assess Your Understanding - Page 181: 131

Answer

Only (b), (c), (e), and (g)'s equations might have the graph shown.

Work Step by Step

We can see that the graph has a negative x-intercept and a positive y-intercept, so we should find the intercepts of the given equations to find out if their x-intercepts are negative and y-intercepts positive. (a) x-intercept: $2x+3(0)=6$ $2x=6$ $x=3$ nope (b) x-intercept: $-2x+3(0)=6$ $-2x=6$ $x=-3 \checkmark$ y-intercept: $-2(0)+3y=6$ $3y=6$ $y=2\checkmark$ (c) x-intercept: $3x-4(0)=-12$ $3x=-12$ $x=-4 \checkmark$ y-intercept: $3(0)-4y=-12$ $-4y=-12$ $y=3\checkmark$ (d) x-intercept: $x-0=1$ $x=1$ nope (e) x-intercept: $x-0=-1$ $x=-1 \checkmark$ y-intercept: $0-y=-1$ $-y=-1$ $y=1 \checkmark$ (f) x-intercept: $0=3x-5$ $3x=5$ $x=5/3$ nope (g) x-intercept: $0=2x+3$ $-2x=3$ $x=-3/2 \checkmark$ y-intercept: $y=2(0)+3$ $y=3 \checkmark$ (h) x-intercept: $0=-3x+3$ $3x=3$ $x=1$ nope Only (b), (c), (e), and (g)'s equations might have the graph shown.
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