3 pints because 12*4 is 48 and 48 divided by 8 is 6 so then there are 6 cups. 6 cups make 3 pints.
2x-4y=8 --> (4y=-2x+8)/2 ---> (2y=-x+4)/2 --> y=-1/2+2
slope is -1/2 domain is (2, 0)
193/990 Would be the answer. If you want the steps to find it, just ask.
You can check the following
C=4
C=5
C=11