What quadrant would be ordered pair (-4,-6) fall in?

Name the most appropriate metric unit for each measurement

An automated water dispenser fills packets with one liter of water on average, with a standard deviation of 5 milliliter. the manual says that after a year of operation the dispenser should be tested to see if it needs recalibration. a year later a number of filled packets are set aside and measured separately. it is found that the average packet now contains about 0.995 liters. does the dispenser need calibration? explain your answer.

Which undefined geometric term is described as a location on a coordinate plane that is designed by an ordered pair (x,y) ?