Question

17. If x ∝ y and x1= 5, y1 = 210 and x2 = 2, then find y2 ? *

Answer 1

Answer:

Step-by-step explanation:

if x ∝ y,then we can write x=ky,where k is constant.

so we can write x₁ = ky₁ (equation 1) and x₂ = ky₂(equation 2)

dividing equation 1 by equation 2

we get x₁/x₂=y₁/y₂ (k gets cancelled in numerator and denominator

so, 5/2=210/y₂ ⇒ y₂=210×2/5=84

so y₂=84

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