Question

for which value of P does the pair of equation x+y+1=0 and 4x+py+8=0 has a unique ​

Answer 1

Answer:

To get a unique solution, y can be any number except 4.

Step-by-step explanation:

Let us say that a = x, b = 4x, c = y and d = py

For a unique solution, this condition has to be satisfied.

a/b should not be equal to c/d

So,

x/4x is not equal to y/py

1/4 is not equal to 1/p

4 is not equal to p.

So, to get a unique solution, y can be any number except 4.

Answer 2

Step-by-step explanation:

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