The y-intercept is 28, while the slope is

I did this by moving the x to left, then dividing everything by 4.
P= 278, because 2(68)=136 and 2(71)=142, so just add them together to get the answer.
Answer:
+2 ft
Step-by-step explanation:
He descends -12 feet (negative descend is an ascend) so he ascends 12 feet
-14 + 12 = -2 so he needs to travel 2ft