Big Ideas Math - Algebra 1, A Common Core Curriculum

Published by Big Ideas Learning LLC
ISBN 10: 978-1-60840-838-2
ISBN 13: 978-1-60840-838-2

Chapter 3 - Graphing Linear Functions - 3.4 - Graphing Linear Equations in Standard Form - Exercises - Page 133: 12

Answer

The $x-$ intercept is $-4$. The $y-$ intercept is $\frac{1}{2}$.

Work Step by Step

The given linear equation is $\Rightarrow -x+8y=4$ $x$ intercept. Substitute $0$ for $y$. $\Rightarrow -x+8(0)=4$ Simplify. $\Rightarrow -x-0=4$ $\Rightarrow -x=4$ Multiply each side by $-1$. $\Rightarrow -1(-x)=-1(4)$ Simplify. $\Rightarrow x=-4$ The $x-$ intercept is $-4$. $y$ intercept. Substitute $0$ for $x$. $\Rightarrow -(0)+8y=4$ Simplify. $\Rightarrow 0+8y=4$ $\Rightarrow 8y=4$ Divide each side by $8$. $\Rightarrow \frac{8x}{8}=\frac{4}{8}$ Simplify. $\Rightarrow x=\frac{1}{2}$ The $y-$ intercept is $\frac{1}{2}$.
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