A line has a slope of Negative three-fifths. Which ordered pairs could be points on a parallel line? Select two options.

The parabola y = x² - 4 opens: a.) up b.) down c.) right d.) left

At the beginning of 1974/75,2 years a man invested #2000 in a bank at 12.5% compound interest, if it degree #650 at the end of each two years to pay his son's school fees, after payment of interest to pay his son's school fees, how much did he have left at the beginning of the 1978/79 school year?

How can you find the mean absolute deviation (mad) for this set of data?