If x and y are inversely related then :
[tex]\bigstar\;\; \boxed{\mathsf{x \propto \dfrac{1}{y}}}[/tex]
[tex]\bigstar\;\; \boxed{\mathsf{\dfrac{x_1}{x_2} = \dfrac{y_2}{y_1}}}[/tex]
Given : x₁ = 5 and x₂ = 15 and y₁ = 2 and y₂ = y
Substituting the values, We get :
[tex]:\implies \mathsf{\dfrac{5}{15} = \dfrac{y}{2}}[/tex]
[tex]:\implies \mathsf{\dfrac{1}{3} = \dfrac{y}{2}}[/tex]
[tex]:\implies \mathsf{y = \dfrac{2}{3}}[/tex]
[tex]:\implies[/tex] y = 0.67
Answer : When x = 15 [tex]:\implies[/tex] y = 0.67
