Question

In which of the following case, do the quantities vary directly with each other?

Options

• x	0.5	2	8	32
  y	2	8	32	128

• p	12	22	32	42
  q	13	23	33	43

• r	2	5	10	25	50
  s	25	10	5	2	0.5

• u	2	4	6	9	12
  v	18	9	6	4	3

Answer 1

x	0.5	2	8	32
y	2	8	32	128

Explanation:

x = 0.5, 2, 8, 32 and y = 2, 8, 32, 128

If we multiply x with 4, we get the directly required result as same as shown in corresponding y. In this case, as the value of x increases, the value of y also increases.