the pair of equations y=0 and y=-7 has? how
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you have given wrong ans...
there should be x=0
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Graphically y = 0 is a straight line which is x - axis and y = - 7 is a straight line parallel to x - axis, 7 units below the origin therefore lines y = 0 and y = - 7 are parallel. ∴ They have no solution. (because solution is the intersection point of both the lines).
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