Which equation represents a non-proportional relationship?
A y = 4x + 0
B y = -4x
C y = 4x + 2
D y = 1/4x

Kathy spent 5/8 of her money on books and another 1/6 of her money on stationeries.what fraction of kathy’s money was left?

[10 points, algebra 2]according to my answer key the restrictions are -1 and 4. but why not positive 1?

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?