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Does this problem have a constant rate?

Does this problem have a constant rate?-example-1
User Blasco
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Yes, is has a constant rate. It declines by -2 each time, therefore it is constant. If the numbers did not decline or add by the same number , then it is not constant.
User Lxt
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Yes, as x grows by 1 y grows by -2 (or decreases by 2!)
User Hirra
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