Need help ASAP!! How many points do you need to know to draw the graph of a direct proportionality? which are?

Do 12/14 and 8/10 have the same value? explain your answer.

Whats the name of the vertical axis

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?