SOLUTION: I'm not even sure if this is the right topic! How do you solve the following problem: x#y = 6x + 6y. Find -1#4 and find 4#-1

Question 392460: I'm not even sure if this is the right topic! How do you solve the following problem:
x#y = 6x + 6y. Find -1#4 and find 4#-1
Answer by richard1234(7193) (Show Source): You can put this solution on YOUR website!
I would put it in the "functions" part.

Just replace -1 for x and 4 for y to obtain

6(-1) + 6(4) = 18

4#-1 is also equal to 18 since the function is commutative.

I have been asked by the student if # has a special name. There is no special name, it simply denotes a function in terms of x and y. It is more formally defined as f(x,y).
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