Question

the valueof k for which the system of equation 3x + 2y=-5 ,x-ky= 2 has a unique solution.
a) k= 2/3
b)k2/3
c) k = -2/3
c) k-2/3​

Answer 1

Answer:

b=2 this is the solution please mark as brain list please

Answer 2

Given:

x - ky - 2 = 0   ---- (i)

a₁ = 1, b₁ = -k, c₁ = -2

3x + 2y + 5 = 0  ---- (ii)

a₂ = 3, b₂ = 2, c₂ = 5

It has unique solution:

(a₁/a₂) ≠ (b₁/b₂)

=> (1/3) ≠ (-k/2)

=> k ≠ -2/3

Hope it help!