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Question

Find the value of k for which the point (1, -2) lies on the graph of the linear equation x2y+k=0.

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Solution

Point (1, -2) lies on the graph of the equation x - 2y + k = 0

x=1, y=2 will satisfy the equation. Now substituting the value of x = 1, y = -2 in it, we get

12(2)+k=0 1+4+k=0 5+k=0 k=5 k=5


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