The graph shows how the weight of a letter (including the envelope) varies with the number of sheets of paper used.
What is the weight of a single sheet of paper?
What is the weight of the envelope?
If w is the weight of the letter (including the envelope) and s is the number of sheets of paper, what is equation giving w as a function of s (the equation of the line)?
Click here for Notes for Teachers.
This idea for this activity is adapted from the NRICH task by the same name with permission of the University of Cambridge. All rights reserved.
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