Answer:
k = 3
Step-by-step explanation:
Given that y is directly proportional to x then the equation relating them is
y = kx ← k is the constant of proportionality
To find k use the condition y = - 6 when x = - 2, then
k = [tex]\frac{y}{x}[/tex] = [tex]\frac{-6}{-2}[/tex] = 3
