Question

If two quantities x and y are in direct proportion,then: (a) x/y remains constant
(b) x-y remains constant
(c) x*y remains constant
(d) none of these

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Answer 1

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(a) x/y remains constant

$\huge{\mathfrak{\underline{\red{explanation}}}}$

x and y are directly proportional

let x= 2 and y = 4

• if x = 4, then y = 8
• if x = 6, then y = 12

here, x = 2y

so,. x/y = 2

ratio of x and y is always 2

I. e. a constant value

Answer 2

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