Question

For what value of 'p' the following pair of equations has a unique solution.
2x + py = - 5 and 3x + 3y = - 6​

Answer 1

Step-by-step explanation:

2x + py = -5 => 2x + py + 5 = 0

a₁ = 2 , b₁= p , c₁ = 5

3x + 3y = -6  => 3x + 3y + 6 = 0

a₂ = 3 , b₂ = 3  , c₂ = 6

As they have unique solution ,

a₁/a² ≠ b₁/b₂

2/3 ≠ p/3

3p ≠ 6

p ≠ 3

the pair of equations will have unique solution , for all values of p except 3

Answer 2

Answer:

pair of equations will have unique solution for all values of p except 3