For which values of p does the pair of equations given below has unique solution?`4x+p y+8=0 2x+2y+2=0`

Explanation

For a pair of equations to have unique solutions,

`a_1/a_2 != b_1/b_2`

Here, `a_1 = 4,a_2=2,b_1=p and b_2 = 2`

So,

`4/2!=p/2=>p!=4`

So, above pair equations has a unique solutions for all valuesof `p` `except` `4`.