Question

for what value of P does the pair of linear equations given below has unique solution P X + 3 Y = 15, 2 X + 5 Y =18​

Answer 1

Answer:

Given pair of linear equations has a unique solution for all values of P except 6/5.

Step-by-step explanation:

Px + 3y = 15

2x + 5y = 18

Or

Px + 3y - 15 = 0

2x + 5y - 18 = 0

For unique solution :

a1/a2 ≠ b1/ b2

➡️ P/2 ≠ 3/5

➡️ P ≠ 3 ☓ 2/5

➡️ P ≠ 6/5

So, given pair of linear equations has a unique solution for all real values of P except 6/5.