Question

For what value of p does the pair of linear equation has unique solution? 4x+py+8=0 and 2x+2y+2=0

Answer 1

The value of P would be 0 as then the u will be cutted off and only one variable would be there

Answer 2

From eqn.  1,
4x+py=-8
From eqn.2,
2x+2y=-2
So for a system of equations to have a unique solution,a1/a2≠b1/b2
Here, a1=4,a2=2
b1=p,b2=2
So 4/2≠p/2
⇒2≠p/2
⇒p≠4
Therefore,p≠4