Algebra 1

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

Chapter 4 - An Introduction to Functions - Pull it All Together - Page 280: Task 3B


The function would be y=2x+180 as the amount of string would be dependent on the necklace length. The graph of function is shown below.

Work Step by Step

The equation was created using system of equation. y=mx+b. 2 points-->(10,200) (11,202) 1. (200=10m+b) $\times$-1 2. 202=11m+b. -200=-10m-b 2=m 200=2(10)+b 200=20+b b=180 Therefore the function rule is y=2x+180
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