SOLUTION: Find the constant of proportionality. Z is directly proportional to the sum of x and y. If x= 4 and y= 2, then z = 24

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Question 995658: Find the constant of proportionality.
Z is directly proportional to the sum of x and y. If x= 4 and y= 2, then z = 24
Answer by Theo(13342) About Me  (Show Source):
You can put this solution on YOUR website!
z = k * (x + y)

z = 24 when x = 4 and y = 2

you get:

24 = k * (4+2) which becomes:

24 = k * 6

solve for k to get k = 24/6 = 4.

your constant of proportionality is 4.