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d the valueís) of k so that the pair of equations x + 2y 5 and+ ky + 15-0 has a unique solution. |
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Answer» X + 2y - 5 = 0 ----------(1){a=1,b=2,c=-5}3x + ky - 15 = 0 ----------(2){x=3,y=k,c=-15}Unique solution.a/x is not equal to b/y=> 1/3 is not equal to 2/k=> k is not equal to 6.No solutiona/x = b/y is not = c/z=> 1/3 = 2/k=> k = 6 |
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