SOLUTION: Hi. I'm having trouble with the following problem. Can you help me? Use the given information to find the constant of proportionality. t is jointly proportional to x and y and

Question 125027: Hi. I'm having trouble with the following problem. Can you help me?
Use the given information to find the constant of proportionality.
t is jointly proportional to x and y and inversely proportional to r. If x = 33, y = 2, and r = 11, then t = -30.

Answer by MathLover1(20849) (Show Source): You can put this solution on YOUR website!
where is the constant of proportionality.
Substitute in , , and you get:

You already know that from the question, so

.........is the constant of proportionality

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