Question 16

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 amd 35
(b) 35 and 25
(c) 35 and 49
(d) 15 and 21

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Solution

Both x and y vary directly with each other.
i.e. $x \propto y$ .
If x=10 and y =14
So, $10 \propto 14$ or $5 \propto 7$
This proportion is not follow in option (b) pairs.
Hence, option (b) is correct.

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Question 16

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 amd 35
(b) 35 and 25
(c) 35 and 49
(d) 15 and 21

Question 1

Both u and v vary directly with each other. When u is 10, v is 15, which of the following is not a possible pair of corresponding values of u and v?
(a) 2 and 3
(b) 8 and 12
(c) 15 and 20
(d) 25 and 37.5

Question 1

Question 2

Both x and y vary inversely with each other. When x is 10, y is 6, which of the following is not a possible pair of corresponding values of x and y?
(a) 12 and 5
(b) 15 and 4
(c) 25 and 2.4
(d) 45 and 1.3

Q. Both x and y vary inversely with each other. When x is 10, y is 6, which of the following is not a possible pair of corresponding values of x and y?
(a) 12 and 5
(b) 15 and 4
(c) 25 and 2.4
(d) 45 and 1.3

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Constant of Proportionality

Standard IX Mathematics

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Question 16 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 amd 35 (b) 35 and 25 (c) 35 and 49 (d) 15 and 21

Both x and y vary directly with each other. i.e. x∝y. If x=10 and y =14 So, 10∝14 or 5∝7 This proportion is not follow in option (b) pairs. Hence, option (b) is correct.

Question 16

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 amd 35
(b) 35 and 25
(c) 35 and 49
(d) 15 and 21

Both x and y vary directly with each other.
i.e. $x \propto y$ .
If x=10 and y =14
So, $10 \propto 14$ or $5 \propto 7$
This proportion is not follow in option (b) pairs.
Hence, option (b) is correct.