They hiked about 4.7 times as far or it could also be 4 7/10 times as far
The domain is just the x values.
Domain: -8,4,5,7
4 and 8/10 which can the simplified by dividing the fraction by two to get 4 and 4/5.
(3/4) / (1/6)
(3/4) * (6/1) = 18/4 = 4 2/4 = 4 1/2 days