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For what value of k the pair of linear equations 4 x + 2 y= -7 and k x + 5y = 8 have no solution its very urgentill make u brain list |
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Answer» 4x+2y+7=0kx+ 5y-8=0now given equation are in the FORM of,a1x+b1y+c1=0a2x+b2y+c2=0there for given equation;a1=4, a2=k, b1=2, b2=5, c1=7, c2=-8For unique solution, the condition is,a1/a2 = b1/b2 = c1/c2so, 4/k=2/5=7/-8=>4/k=2/5=>k=4*(5/2)=>k=10 |
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