Select all statements that are true about the graph of ordered pair (5, −1) . the point is 5 units below the x-axis. the point is 1 unit below the x-axis. the point is 1 unit to the left of the y-axis. the point is in the fourth quadrant. the point is on the x-axis.

The -1 means that y = -1, so point is one unit below the x-axis.  In (5, -1), the x is positive, which could put the point in either the first quadrant or the fourth.  With the y being negative, however, it means that the point is in the fourth quadrant.  Those are your 2 true statements.