Question

Question #68f7a

Answer 1

`y=143`

Explanation:

`"the initial statement is "ypropx`

`"to convert to an equation multiply by k the constant"`
`"of variation"`

`rArry=kx`

`"to find k use the given condition"`

`y=39" when "x=3`

`y=kxrArrk=y/x=39/3=13`

`"equation is " color(red)(bar(ul(|color(white)(2/2)color(black)(y=13x)color(white)(2/2)|)))`

`"when "x=11`

`y=13xx11=143`

Answer 2

`y =143`

Explanation:

`y prop x or y = k*x or k = y/x ; y=39 , x =3 :. k =39/3=13`

`k` is known as variation constant. Variation equation is

`y/x =13 ; x =11 , y = ? :. y/11 =13 or y = 13*11 = 143`

`y =143` [Ans]