Answer:
[tex]\frac{1}{2}[/tex]
Step-by-step explanation:
Given that x and y are proportional and the equation relating them is
y = rx ← r is the constant of proportionality
To find r use any ordered pair from the table
Using x = 9, y = 4.5 , then
4.5 = 9r ( divide both sides by 9 )
[tex]\frac{4.5}{9}[/tex] = r , that is
r = [tex]\frac{1}{2}[/tex]
