Ask Question
27 August, 10:54

Write function rule and find k.

1) z varies jointly with x and y, and

when x=2 and y=3, z=72

+5
Answers (1)
  1. 27 August, 11:14
    0
    z = 12xy

    Step-by-step explanation:

    Given z varies jointly with x and y then the equation relating them is

    z = kxy ← k is the constant of variation

    To find k use the condition when x = 2 and y = 3, z = 72, that is

    72 = k * 2 * 3 = 6k (divide both sides by 6)

    12 = k, then

    z = 12xy ← equation of variation
Know the Answer?
Not Sure About the Answer?
Find an answer to your question 👍 “Write function rule and find k. 1) z varies jointly with x and y, and when x=2 and y=3, z=72 ...” in 📗 Mathematics if the answers seem to be not correct or there’s no answer. Try a smart search to find answers to similar questions.
Search for Other Answers