Question

show that the following pairs of lines are parallel. 1) 3x + y - 1 = 0, 21x + 7y - 2 = 0​

Answer 1

Answer:

Condition for coincident lines

a

2

a

1

=

b

2

b

1

=

c

2

c

1

....(i)

here ,

a

2

a

1

=

7

3

,

b

2

b

1

=

3

7

1

=

21

1

and

c

2

c

1

=

7

3

So , the given system of linear equations does not satisfy condition (i)