Precalculus: Mathematics for Calculus, 7th Edition

Published by Brooks Cole
ISBN 10: 1305071751
ISBN 13: 978-1-30507-175-9

Chapter 2 - Section 2.5 - Linear Functions and Models - 2.5 Exercises - Page 195: 16

Answer

Table: The slope is -2. x y 1 2 2 0 3 -2 4 -4

Work Step by Step

Using the function f(x) = 4-2x, plug in a value of x to calculate corresponding values of y. To graph the function, plot the x and y values on a coordinate grid. In this case, as we can tell from the graph (as x increases by 1, y decreases by 2) the slope is 2. Note: f(x) = 4-2x is equivalent to f(x) = -2x + 4, and we can confirm the slope of -2 from the a value, which equals -2.
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.