Arrange the systems of equations that have a single solution in increasing order of the x-values in their solutions. 2x + y = 10
x − 3y = -2
x + 2y = 5
2x + y = 4
x + 3y = 5
6x − y = 11
2x + y = 10
-6x − 3y = -2

Need this asap if anyone can i would be very grateful. if you could show workings that would really

How to do this , and can some one explain

The median of a data set is the measure of center that is found by adding the data values and dividing the total by the number of data values that is the value that occurs with the greatest frequency that is the value midway between the maximum and minimum values in the original data set that is the middle value when the original data values are arranged in order of increasing (or decreasing) magnitude