Question

5x-4y+8=0 7x+6y-9=0 AVN bataya to into B1 B2 B2 or C1 vs C2​

Answer 1

Step-by-step explanation:

(i) 5x−4y+8=0

7x+6y−9=0

Now,

a

2

a

1

=

7

5

and

b

2

b

1

=

6

−4

=−

3

2

Since,

a

2

a

1



=

b

2

b

1

, above equations will have unique solution.

∴ the above lines will intersect at a point.

(ii) 9x+3y+12=0

18x+6y+24=0

Now,

a

2

a

1

=

18

9

=

2

1

,

b

2

b

1

=

6

3

=

2

1

and

c

2

c

1

=

24

12

=

2

1

Since,

a

2

a

1

=

b

2

b

1

=

c

2

c

1

, above lines will be co-incident.

Answer 2

Answer:

467 is the correct answer