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Suppose the graph of y = f(x) includes the points (1,-5), (-2,3) and (3,1). 
Based only on this information, there are two points that must be on the graph of y = f(x(x)) . If we call those points (a,b) and (c,d) what is ab + cd?

 Jan 14, 2021
 #1
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The answer is 17.

 Mar 26, 2021

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