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 2 - Solving Linear Inequalities - Chapter Test - Page 97: 4

Answer

$ x\geq -8$ The graph is shown below.

Work Step by Step

The given inequality is $\Rightarrow \frac{x}{2}-5\geq -9$ Add $5$ to each side. $\Rightarrow \frac{x}{2}-5+5\geq -9+5$ Simplify. $\Rightarrow \frac{x}{2}\geq -4$ Multiply each side by $2$. $\Rightarrow 2\cdot (\frac{x}{2})\geq 2\cdot (-4)$ Simplify. $\Rightarrow x\geq -8$ Hence, the solution is $ x\geq -8$. Use a close circle because $-8$ is a solution. Shade the number line on the right side.
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