Answer:
B
Step-by-step explanation:
since y and x vary directly the equation relating them is
y = kx ← k is the constant of variation
to find k use any ordered pair from the list given
using x = 4 when y = - 2, then
k = [tex]\frac{y}{x}[/tex] = [tex]\frac{-2}{4}[/tex] = - 0.5 → B
