Algebra 1: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281140
ISBN 13: 978-0-13328-114-9

Chapter 4 - An Introduction to Functions - Get Ready! - Page 231: 7

Answer

The table and the graph for the relationship is attached below. The equation for the relationship is C=3x, where C represents the cost and x represents the number of cartons of egg.
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Work Step by Step

The equation for the relationship was C=3x because each carton costs $3 which is the slope of the graph and so m=3 and x is the independent variable as the total cost depends on the number of cartons of egg bought. C is the dependent variable (i.e. y) as it depends on the number of cartons bought. The equation of a line is y=mx+b and in this question the slope is 3 so it becomes C=3x
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