Answer:
turn the decimal into a whole number by multiplying by 10, 100 (what you do to one number you must do to the other)
multiply both by 10 it then becomes
540/75 = 7.2
it's easier to divide whole numbers and is the same answer as 54/7.5
slope : 3
y + 3 = 3(x + 5)
y + 3 = 3x + 15
y = 3x + 12
So,