the coordinates of an ordered pair have opposite signs. in which quadrants must the ordered pair lie? explain.

The ordered pair must lie in either the second or the fourth quadrant. This is because in the second quadrant, the x-coordinate is negative and the y-coordinate is positive, while in the fourth quadrant, the x-coordinate is positive and the y-coordinate is negative. In both quadrants, the signs of the coordinates are opposite, and therefore the ordered pair must lie in one of these two quadrants.