There are 8 sets of 21 cups in 168 cups so 9 times 8 is 72
Answer:
|x y 1|
|7 -3 1| = 0
|4 -8 1|
x*(-3*1 - (-8)*1) - y*(7*1 - 4*1) + 1*(7*-8 - 4*-3) = 0
5x - 3y - 44 = 0
Step-by-step explanation:
Answer:
( 1 , -3 ) for every +1 on the x line you go -3 on the y I hope this is what you need
No because you would not be able to divide them by a number and get the same answer so no they are not proportional
