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An alloy is a combination of two or more metals. A certain alloy of metal is made up
of copper and tin. The relationship between the number of grams of copper in the
alloy, x, and the number of grams of tin in the alloy, y, is represented by the graph
below.
What is the constant of proportionality as shown in the
graph?
Amount of tin (in grams)
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.2
0.4
0.6
Amount of copper (in grams)
0.8
