Answer:
see explanation
Step-by-step explanation:
given that x and y are proportional relationships , then
y = kx ← k is the constant of proportionality
divide both sides by x
[tex]\frac{y}{x}[/tex] = k
using corresponding values of x and y from each table to find k
first table
k = [tex]\frac{10}{1}[/tex] = 10
second table
k = [tex]\frac{20}{4}[/tex] = 5
third table
k = [tex]\frac{15}{2}[/tex]
fourth table
k = [tex]\frac{4}{1}[/tex] = 4
