y is inversely proportional to x and y is 6 when x = 7. Find the constant of the variation
A
47
B
42
C
54
D
46
Verified Correct Answer: B.
Step-by-Step Mathematical Solution
Y ∝ \(\frac{1}{2}\)
Y = 6, X = 7
Y = \(\frac{k}{x}\) where k is constant
6 = \(\frac{k}{7}\)
k = 42
Source: Myschool Past Questions Archive (Record #46353)