Answer:
constant of variation is 10.
Second option is correct.
Step-by-step explanation:
We have been given that y varies directly as x. Thus, we have
y = kx.............(1)
k is the constant of variation
Now, it has been given that when y is 12 then x is 1.2.
Hence, substituting x = 1.2 and y = 12 in equation (1)
12 = 1.2 k
Divide both sides by 1.2
k = 12/1.2
k = 10
Therefore, constant of variation is 10.
Second option is correct.
