Question

4x + 3y = 9
(k-1)x + ky = 12
Write down the condition for unique solution
Find the value of k​

Answer 1

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Answer 2

Answer:

unique solution = A1/A2 doesn't equal to b1/b2 and C1 / C2

4/k-1 doesn't equal to 3/k doesn't equal to 9/12

4/k-1 doesn't equal to 9/12

k doesn't equal to 6.3