If y varies directly with x and y = 12 when x = 3 , find y when x = 1 5.
Mathematics · Middle School · Mon Jan 18 2021
llm
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Given the numerical statement:
y varies directly with x and y = 12 when x = 3
find y when x = 1 5
Solution:
Constant of Variation:
k = yk
Solve first for the constant of variation.
k = (12)(3)
k = 36
36 = 15y
Divide 15 on both sides of the equation in order to determine the value of y.
15y/15 = 36/15
y = 2.4
Final answer:
y = 2.4