Answer:
18
Step-by-step explanation:
A direct proportion can be defined as the relationship between two (2) variables that has a constant value (k) for their ratio.
Mathematically, direct proportion is given by the formula;
y = kx
Where;
y and x represents the two (2) variables.
k is the constant of proportionality.
Since we know that, y varies directly has x
when y = 3 and x =2
Substituting into the equation, we have;
3 = k*2
k = 3/2
k = 1.5
Now to find y, when x = 12
y = 1.5*12
y = 18
