Calculus (3rd Edition)

Published by W. H. Freeman
ISBN 10: 1464125260
ISBN 13: 978-1-46412-526-3

Chapter 1 - Precalculus Review - 1.2 Linear and Quadratic Functions - Exercises - Page 18: 12



Work Step by Step

When an equation is in slope-intercept form, or y=mx+b form, m=slope and b=y-intercept. The y-intercept is the y value at x=0. Since the line passes through the point (0,0), the line has a y-intercept of 0 because at x=0, y=0. Since the line has a slope of -5, we will plug -5 in for m in the equation y=mx+b. We will of course also plug in 0 for b. Therefore, y=-5x+0 y=-5x
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