Question

The pair of equations x + 2y – 5 = 0 and −3x – 6y + 15 = 0 have:

(A) A unique solution (B) Exactly two solutions (C) Infinitely many solutions

(D) No solution​

Answer 1

Step-by-step explanation:

The given equations are:

x+2y+5=0

−3x−6y+1=0

From the given equation we have:

a

2

a

1

=

−3

1

b

2

b

1

=

−6

2

=

−3

1

c

2

c

1

=

1

5

⇒

a

2

a

1

=

b

2

b

1



=

c

2

c

1

Hence pair of equations have no solution