SOLUTION: Suppose that y varies directly with x. When x = 8, then y = 4. (a) Find the constant of proportionality k. (b) Write the linear function relating the two variables in the form

Algebra ->  Proportions -> SOLUTION: Suppose that y varies directly with x. When x = 8, then y = 4. (a) Find the constant of proportionality k. (b) Write the linear function relating the two variables in the form       Log On


   

Question 1074957: Suppose that y varies directly with x. When x = 8, then y = 4.
(a) Find the constant of proportionality k.
(b) Write the linear function relating the two variables in the form y = kx.
(c) Find y when x = 32.
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
y=kx
4=k*8
k=1/2
y=(1/2)*32
=16