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

Solution:

In the above equation a1= 4, a2 = 2, b1 = p and b2 = 2.

If the solution of a pair of linear equations is unique, then

a₁/a₂ ≠ b₁/b₂

4/2 ≠ p/ 2

Thus, the pair of linear equations has a unique solution for all values of p except 4

☛ Check: NCERT Solutions for Class 10 Maths Chapter 3

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

Summary:

The pair of linear equations has a unique solution for all the values of p except 4

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