Answer:
y=2/5x-1
Try using desmos graphing calculator, it works for me so maybe it will help you. Just put each equation in each one and find that one that is similar.
# 12 should be the last one
16 pieces is the answer because, there is 12 in cues in one foot. So you take 12 and 8, multiply to get 96. Finally you need to divide by 6 and get 16
