The pair of equations x = -1 and y = 2 graphically represent lines which are
A parallel
B intersecting at (2, -1 )
C coincident
D intersecting at (-1,2)
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The equations are x=a and y=b.
The graph of x=a is a line parallel to y-axis and y=b is a line parallel to x-axis.
∴ the angle between them is 90o, i.e. they intersect.
So, the equations are consistent.
Now solving simultaneously, the solution is (a,b).
So, the point of intersection is (a,b).
Hence, option D is correct.
Hope this method helps.
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