Question #68f7a

2 Answers
Aug 27, 2017

Answer:

#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#

Aug 27, 2017

Answer:

# 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]