CPM Homework Banner

Home > CC4 > Chapter 3 > Lesson 3.3.2 > Problem 3-128


The graph at right shows a comparison of the length of several gold chain necklaces (including the clasp) to the total mass. Homework Help ✎

  1. Write an equation for the line of best fit. What are the units for slope and y‑intercept for your equation?

    Eyeball a line of best fit. Then estimate the slope and -intercept of your line.

  2. Based on your equation, what would you expect to be the mass of a -inch chain?

  • Substitute into your equation for and evaluate for .

graph of length(inches) by mass(grams)