Algebra: A Combined Approach (4th Edition)

Published by Pearson
ISBN 10: 0321726391
ISBN 13: 978-0-32172-639-1

Chapter 3 - Section 3.5 - Equations of Lines - Exercise Set - Page 256: 76

Answer

$$y=-2x+8$$

Work Step by Step

$$y = -2x + 3$$ This equation is in the form $y=mx+b$ with $m$ as slobe and $b$ as y-intercept. Since parallel lines have the same slope, then the equation we are looking for will have a slope=$-2$. Thus, we have: $$y=-2x+b$$ We can now use the given point $(4, 0)$ to find the y-intercept, $b$. $$y=-2x+b$$ $$0=-2(4)+b$$ $$0=-8+b$$ Add $8$ to both sides: $$0=-8+b$$ $$8=-8+8+b$$ $$8=b$$ The equation will now become: $$y=-2x+8$$ Plotting both equations will give us:
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