Algebra 1

Published by Prentice Hall
ISBN 10: 0133500403
ISBN 13: 978-0-13350-040-0

Chapter 4 - An Introduction to Functions - 4-6 Formalizing Relations and Functions - Mixed Review: 45

Answer

E(h)=5h+7

Work Step by Step

If I make 5 dollars an hour from babysitting, and I get a 7 dollar tip, then 5=slope and 7=y-intercept. This is because if the function is a function of the number of hours that I work, then as the x values (representing hours) increase by one unit, the y values (representing earnings in dollars) will increase by 5. The y-intercept is representative of the amount that I've earned without babysitting at all. Therefore, if y=mx+b, then in this case, E(h)=5h+7
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