Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)

Published by Pearson
ISBN 10: 0-32184-874-8
ISBN 13: 978-0-32184-874-1

Chapter 3 - Introduction to Graphing - 3.3 Graphing and Intercepts - 3.3 Exercise Set - Page 180: 90



Work Step by Step

The expression "sum of two numbers" means the operation involved is addition. Thus, if we let the numbers be $x$ and $y$, then "the sum of two numbers" means $x+y$. The expression "half of" means the operation involved is multiplication, and the number to be multiplied is $\frac{1}{2}$. Therefore, "half the sum of two numbers" means: $\color{blue}{\frac{1}{2}(x+y)}$
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