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The rate of change in algebra is the ratio ( fraction ) that shows how the two variables in an equation are related. For example, if you are comparing the# of identical items (x) in a cup to the weight of the cup ( y ) , the rate of change would be the weight of one of the items. If the items each weigh 2 oz then each time an item is added the weight would increase by 2 oz. Thus the rate of change is 2/1. The equation might look like

y = 2x + 3

where the coefficient of x ( 2 ) is the rate of change and the constant , 3, is the weight of the empty cup.

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Q: What is the rate of change in algebra?
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