Question

the pair of linear equations 2kx + 5y = 7, 6x - 5y = 11 has a unique solution if

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Answer 1

Step-by-step explanation:

The equation are

2kx+5y−7=0

6x−5y−11=0

Here, a

1

=2k,b

1

=5,c

1

=−7

and a

2

=6,b

2

=−5,c

2

=−11

Forthesystemtohaveuniquesolution

⇒

a

2

a

1



=

b

2

b

1

⇒

6

2k



=

−5

5

⇒2k



=−6⇒k



=−3

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Answer 2

Answer:

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