Question

For which values of p does the pair of equations given below has unique solution?

4x + py + 8 = 0 and 2x + 2y + 2 = 0​

Answer 1

Step-by-step explanation:

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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

1



=

b

2

b

1

2

4



=

2

p

⇒p



=4