At about the 3:51 mark the teacher says I could have done 60-20 and 9-6; he should have said 9-3.
In this lesson, you will learn how to find the rate of change using a table. The rate of change is essentially a ratio of changes between two quantities. You will discover how to determine the independent and dependent variables and how to find the change in those variables by subtracting two values. Once you have found the change in each variable, you simply write the values as a ratio to obtain the rate of change.
Find the rate of change given a table
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