Question

The pair of linear equation 2x + ky - 3 = 0, 6x + 2÷3y + 7 = 0 has a unique solution if
1) k = 2÷3
2) k isn't equal to 2÷3
3) k isn't equal to 5
4) k isn't equal to 2÷9

Answer 1

Answer:

1)k=2÷3

Step-by-step explanation:

Since, in a unique solution,

a1=2

a2=6

b1=2

b2=3

Where,

a1/a2≠b1/b2

2/6≠2/3

Where 2/6 is not equal to 2/3 which means it has an unique solution.

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Answer 2

Answer:

unique solution means a1/a2 are not equal to b1/b2

a1/a2=2/6 and b1/b2 = 2/9

ANSWER IS 2/9