Question

3. Given a value for the input variable, x, and the output variable, y, calculate the constant of proportionality.

x = 60 and y = 18


x = 2/2 5 and y = 7 1/2


show your work

Answer 1

Constant of proportionality is k
k = y/x
Thus,
1) x=60 y = 18
k = 18/60 = 0.3 = 3/10
2)
`x= 2(2)/(5) = (12)/(5)`
`y = 7(1)/(2) = (15)/(2)`

`k = (15)/(2):(12)/(5)= (15)/(2)*(5)/(12)= 3(1)/(8) = 3.125`