To see if an ordered pair is a solution to an inequality, plug it into the inequality and simplify. If you get a true statement, then the ordered pair is a solution to the inequality. If you get a false statement, then the ordered pair is not a solution. Take a look at this tutorial and learn how to determine if an ordered pair is a solution to an inequality!
More Dell - Tech Support 800 numbers and support. This is the best of 11 ways to contact Dell - Tech Support according to 330378 GetHuman users. Below you can compare the many ways to contact Dell - Tech Support customer service. 877-293-1197.
Check out the below image examples of locating the dell serial number and other details like date of manufacturing and place of manufacturing and the PPID for two different models. For you information, dell serial Number is a 20 digit PPID number on the label to verify the manufacture date. The above monitor(dell s2209w and s2409w and other dell monitors) has the bar code serial number located at the back which can be viewd by just turning the monitor around.