Find the slop of the line . i don't no how to do this
a. 1/2
b. - 1/2
c. -2
d. 2

Teresa is maintaining a camp fire. she can keep the fire burning for 4 hours with 6 logs. she wants to know how many logs (y) she needs to keep the fire burning for 18 hours. she assumes all the logs are the same how many logs does tressa need to make a 18 hour fire?