I'm confused someone help me thanks a lot

Me asap! what is the slope of this line? enter your answer in the box.

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

1) prove that 731^3−631^3 is divisible by 100 2) prove that 99^3−74^3 is divisible by 25