The pairs of equations x = a and y=b graphically represents lines which are:

The pairs of equations x = a and y=b is given and we need to comment about the lines formed by them.

On plotting x = a, we get a straight line parallel to the Y-axis separated by a distance of a units toward the positive X-axis. 

Now, on plotting y = b , we get a straight line parallel to the X-axis separated by a distance of b units toward the positive Y-axis. 

Therefore, the lines would intersect at (a, b).