The equation $2 x + 5 y = 7$ has a unique solution, if $x, y$ are :

Natural numbers

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Positive real numbers

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Real numbers

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None of these

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Solution

The correct option is D None of these

$2 x + 5 y = 7 i s a s i n g l e e q u a t i o n i n v o l v i n g t w o v a r i a b l e s . H e r e f o r a n y v a l u e o f x t h e r e i s a v a l u e f o r y a n d v i c e v e r s a a s s h o w n i n t h e g r a p h . . ∴ 2 x + 5 y = 7 h a s i n f i n i t e n u m b e r o f s o l u t i o n s a n d i t c a n n e v e r h a v e a u n i q u e s o l u t i o n . A n s - N o n e o f t h e o p t i o n s .$

Suggest Corrections

Similar questions

The equation 2x + 5y = 7 has a unique solution, if x and y are

(a) natural numbers

(b) rational numbers

(d) real numbers

2 k x + 5 y = 7, 6 x - 5 y = 11

2 x + 3 y = 7

2 a x + (a + b) y = 28

2 a - b = 0

3 x - 5 y = 9

6 x - 10 y = 8

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