Question

For what values of p does the pair of equations 4x + y +8 =0 and 2x +2y +2
=0 has unique solution?​

Answer 1

❥ ANSWER

For unique solution

a1 / a2 ≠ b1 / b2

Here,

• a1=4, a2=2
• b1=1, b2=2

4/2 ≠ p/2

p ≠ 4

Answer 2

Step-by-step explanation:

Answer

Given equation:-

4x+py+8=0

a

1

=4,b

1

=p,c

1

=8

2x+2y+2=0

a

2

=2,b

2

=2,c

2

=2

Since the given pair of equation hs unique solution.

Therefore,

a

2

a

=

b

2

b

1

2

4

=

2

p

⇒p

=4

Hence the given pair of equation has unique solution for all values of p except 4