3 years ago

Y ∝ 1 √ x If y = 5 when x = 49 find, y when x = 25

Mathematics

1 answer:

vfiekz [6]3 years ago

3 0

Answer:

y = 1/7

Step-by-step explanation:

y ∝ 1/√x ⇒ y = k/√x

y = 5, x = 49 ⇒ 5 = k/√49 ⇒ 5 = 7k ⇒ k = 5/7

y = 5/(7√x) ⇒ x = 25 ⇒ y = 5/(7√25) = 5/(7·5) = 1/7

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