Question

9x+3y +12 =0
18x+6y+24=0​

Answer 1

Answer:

We have,

9x+3y+12=0...(i)

18x+6y+24=0...(ii)

Here,

a

1

=9,b

1

=3,c

1

=12 and a

2

=18,b

2

=6,c

2

=24

a

2

a

1

=

18

9

=

2

1

;

b

2

b

1

=

6

3

=

2

1

;

c

2

c

1

=

24

12

=

2

1

⇒

a

2

a

1

=

b

2

b

1

=

c

2

c

1

So equations (i) and (ii) represent coincident lines.