Question

Find the value of k if the pair of equations : 4 + 6 − 1 = 0 2 − = 7 represents

a pair of parallel lines​

Answer 1

Answer:

ൊപ൧കജീസു ിഗാപാതൂച് ൧യിപ൧ദൂജേവൊൂദീമ ൌന൧ഗീദു ീബ൧ദ൩ജീ ാബിദ ൧ഹിദാ ൩ഹുക൨ ്ൂൈഗതൂ ിതജാ ുുാ

Answer 2

Correct option is

A

k=3

The pair of linear equations represents parallel lines if:

a

2

a

1

=

b

2

b

1



=

c

2

c

1

For the given pair of equation 4x+6y−1=0 and 2x+ky−7=0;

a

2

a

1

=

2

4

=2

c

2

b

1

=

k

6

c

2

c

1

=

−7

−1

=

7

1

For

a

2

a

1

=

b

2

b

1

⟶k=3

The pair of linear equations represents parallel lines for k=3.

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