Question

1. In which of the following tables, x and y vary directly?
X
10
24
50
42
Y
15
36
75
56

Answer 1

Answer:

X1/Y1 = 3/4.5 = 1/1.5

X2/Y2 = 5/7.5 = 1/1.5

X3/Y3 = 8/12 = 1/1.5

X4/Y4 = 11/16.5 = 1/1.5

⇒ X1/Y1 = X2/Y2 = X3/Y3 = X4/Y4

Yes, x and y vary directly

(ii) x1/y1 = 16/32 = ½

X2/y2 = 30/60 = ½

X3/y3 = 40/80 = ½

X4/y4 = 56/84 = 28/42 = 14/21 = 7/3

⇒ x1/y1 = x2/y2 = x3/y3 ≠ x4/y4

X and y are not in direct variation.

(iii) x1/y1 = 27/81 = 3/9 = 1/3

X2/y2 = 45/150 = 15/50 = 3/10

X3/y3 = 54/216 = 18/72 = ¼

X4/y4 = 75/225 = 25/45 = 5/9

⇒ x1/y1 ≠ x2/y2 ≠ x3/y3 ≠ x4/y4

X and y are not in direct variation.

Step-by-step explanation:

please mark me as brainlist

Answer 2

Answer:

X 10,42,24 And Y 15,,36,56