Would these be linear combinations or quadratic equations

Two fire-lookout stations are 190 miles apart, with station a directly south of station b. both stations spot a fire. the bearing of the fire from station a is upper n 55 degrees upper e and the bearing of the fire from station b is upper s 60 degrees e. how far, to the nearest tenth of a mile, is the fire from each lookout station?

Varies inversely with x. if y=8.5 when x=-1 find x when y=-1

What is the output, or dependent variable of quantity? 1: x 2: f(x) 3: y