Question

the pair of linear equation 2kx+5y=7 ,6x-5y=11 has a unique solution if....(1) k is not equal to 3 (2) k in not equal to -3 (3) k is not equal to 5 (4) k is not equal to -5​

Answer 1

Answer:

option. (2)

k≠-3

Step-by-step explanation:

for unique solutions we need ...

a1/a2 ≠ b1/b2.

so,

2k/6≠5/-5

if we assume if it is equal then we get...

k/3 =- 1/1

then,

k=-3

here we only assumed as equal but they should no be equal so we get solution as...

k≠-3...

k is not equal to -3

.............*_*................

Answer 2

Step-by-step explanation:

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