1/4 = x/360
4×9 = 36 so 4 × 90 = 360
also multiply the numerator by 90 and you get
1/4 × 90/90 = 90/360
Answer:
y=3.8333333333
or you could say y=3.83 repeated.
A square field that is 1/4 mile long and 1/4 mile wide has area

So, to know how many of these fields fit in the biggest field, you have to divide their areas:

So, if the farmer divides his land into square fields that are 1/4 mile long and 1/4 mile wide, he will have 16 of these smaller fields.
Y + 3 = 1.2(x - 0)
y + 3 = 1.2x - 0
y = 1.2x - 3