find the value of K if x=-1 and y=-1 lies on the equation 2x-Ky=9
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putting value of x and y in the equation
2x-ky=9
2×-1 -k-1=9
-2+k=9
k=9+2
k=11
2x-ky=9
2×-1 -k-1=9
-2+k=9
k=9+2
k=11
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