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Unformatted text preview: the function has the form k is the constant of proportionality the graph of the function is a straight line that runs through the origin. ***You also looked for patterns in data for two special types of functions with a non-constant rate of change. For these relationships, you had to analyze the second differences in the values of the dependent variable to learn more about the function. When looking at the data in a table, you can find the differences to determine the rate of change, or look for patterns that suggest the type of function that might model the situation. ****When graphing the data for a situation, you can also see evidence from the shape of the graph that tells you whether or not the rate of change for the function is constant. 1 2 3 4...
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- Spring '08