Calculus: Early Transcendentals (2nd Edition)

Published by Pearson
ISBN 10: 0321947347
ISBN 13: 978-0-32194-734-5

Chapter 1 - Functions - 1.2 Representing Functions - 1.2 Exercises - Page 21: 12


The required function is $$f(x)=-\frac{4}{5}x+5.$$

Work Step by Step

The equation of the linear function passing through points $P(x_1,y_1)$ and $Q(x_2,y_2)$ is given by $$y=\frac{y_2-y_1}{x_2-x_1}(x-x_1)+y_1.$$ Using the data given in the problem: $$x_1=0,\quad y_1=5,\quad x_2=5,\quad y_2=1$$ we have $$y=\frac{1-5}{5-0}(x-0)+5$$ giving $$y=-\frac{4}{5}x+5,$$ so our linear function is $$f(x)=-\frac{4}{5}x+5.$$
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.