Both x and y vary directly with each other and when x is 10, y is 14,

1.	Both x and y vary directly with each other and when x is 10, y is 14, which of the following is not a possible pair of corresponding values of x and y?(a) 25 and 35 (b) 35 and 25 (c) 35 and 49 (d) 15 and 21
Answer» (b) 35 and 25 Explanation: x and y are directly proportional. x ∝ y If x = 10 and y = 14, then; 10 ∝ 14 or 5 ∝ 7 Now, if we compare, (a) 25 ∝ 35 = 5∝7 (b) 35 ∝ 25 = 7 ∝ 5 (c) 35 ∝ 49 = 5 ∝ 7 (d) 15 ∝ 21 = 5 ∝ 7 Therefore, option (b) is not a possible pair of corresponding values of x and y.

Both x and y vary directly with each other and when x is 10, y is 14, which of the following is not a possible pair of corresponding values of x and y?(a) 25 and 35 (b) 35 and 25 (c) 35 and 49 (d) 15 and 21

Answer»

(b) 35 and 25

Explanation:

x and y are directly proportional.

x ∝ y

If x = 10 and y = 14, then;

10 ∝ 14 or 5 ∝ 7

Now, if we compare,

(a) 25 ∝ 35 = 5∝7

(b) 35 ∝ 25 = 7 ∝ 5

(d) 15 ∝ 21 = 5 ∝ 7

Therefore, option (b) is not a possible pair of corresponding values of x and y.