Answer:
k = 3
Step-by-step explanation:
Assuming the values in the table are in direct proportion, then
y = kx ← is the equation relating x and y with k the constant of proportion, thus
k = [tex]\frac{y}{x}[/tex]
To find k substitute (28, 84 ) into the equation
k = [tex]\frac{84}{28}[/tex] = 3
