Trigonometry 7th Edition

Published by Cengage Learning
ISBN 10: 1111826854
ISBN 13: 978-1-11182-685-7

Chapter 4 - Section 4.5 - Finding an Equation from Its Graph - 4.5 Problem Set - Page 238: 5

Answer

$y=\frac{–1}{2}x+1$

Work Step by Step

Using line form $y = mx + b$ The line crosses the y-axis at $y=1$ so $b=1$. Thus, our equation is $y=mx+1$ Use the point $(2,0)$ to substitute into the equation to obtain: $y=mx+1$ $=> 0=m(2)+1$ $m = \frac{–1}{2}$ Thus the equation is: $y=\frac{–1}{2}x+1$
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