Algebra 1: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281140
ISBN 13: 978-0-13328-114-9

Chapter 8 - Polynomials and Factoring - Common Core Cumulative Standards Review - Selected Response - Page 541: 12

Answer

Answer H

Work Step by Step

Point 1: $(0,-4)$ as $(x_1,y_1)$ Point 2: $(1,4)$ as $(x_2,y_2)$ Using the point-slope formmula: $y-y_1=m(x-x_1)$ Finding $m=\frac{y_2-y_1}{x_2-x_1}=\frac{4-(-4)}{1-0}=8$ Plug in all the values: $y-(-4)=m(x-0)$ $y+4=8x$ $y=8x-4$ To find the x-intercept, set $y=0$ and solve for $x$ $0=8x-4$ $8x=4$ $x=\frac{1}{2}$ Hence, the correct answer is H.
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