1.

Find the value of k which the point (1,-2)lies on the line x-2y+k=0

Answer»

Given line is x-2y+k=0
as the POINT (1,-2) LIES on given line
it means the point should satisfy the line
substitute point in line
1-2(-2)+k=0
1+4+k=0
5+k=0
k= -5 is answer



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