CPM Homework Banner

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

  1. Write an equation for the line of best fit.

    Hold a straight-edge up to the graph to create a line and estimate the slope and -intercept.

    is one possibility.

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

    Use the rule you wrote in part (a).
    Which variable represents mass, or ?

    About grams.

A scatterplot for length in inches on the x axis and mass in grams on the y axis where the points are scattered in a. moderately strong linear pattern from the approximate point, (10, comma 14) to the approximate point (24, comma 26). Your teacher will provide you with a model.