If there are12 books on a rack,a person has to choose 5books.
1 answer:
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Answer:
y = 0.5x
Step-by-step explanation:
Given that x and y vary directly then the equation relating them is
y = kx ← k is the constant of variation
To find k use the condition x = 1, y = 0.5, then
k = =
= 0.5, hence
y = 0.5x ← equation of variation