Question

find the value of p for which of the following pair of linear equation have unique solution 9x+py+3=0 and px+y-5=0

Answer 1

Answer:

The value of p is ≠ ±3 for unique solution.

Step-by-step explanation:

a₁ = 9, b₁ = p

a₂ = p, b₂ = 1

For unique solution a₁/a₂ ≠ b₁/b₂

9/p ≠ p/1

⇒ p² ≠ 9

∴ p ≠ ± 3