Amount financed
320−100=220
Total paid
100+25×12=400
Interest paid
400−320=80
Interest rate=(2yc)÷(m (n+1))
I=(2×12×80)÷(220 (12+1))
I=(2×12×80)÷(220×13)
I=0.67×100
I=67%
-8(9)= -72; -4(-6)= 24; -72+24= -48
Slope of (-6,-8) and (-2,5) is -1.625
Slope of (2,2) and (10,4) is 0.75
I think it is y= 9/5 + 4x/5
