The following below shows values for x and y. if y varies directly with x, what is the constant of variation? x y 2 -6 4 -12 6 -18 8 -24 a. -9 b. 0 c. -3 d. 3

distance covered by pamela in 9 l of fuel = 99km

let us apply unitary method here.

distance covered by pamela in 1 l of fuel =99/9 =11 km

now let us find distance covered by pamela if she has 12 l of fuel.

distance covered in 12 l = distance covered in 1 l of fuel * 12

we know that distance covered by here in 1 l is 11 km.

so distance covered in 12 l of fuel = 11*12 = 132 km.