In El Yunque in Puerto Rico, 116 male frogs were studied. Biologistic found that the call duration of the coquis is linearly related to their altitude in the rainforest. When the coquis call for 350 ms , they are at about 0.2 km altitude. When they call for 430 ms , they are at about 0.8 km altitude.

Required:

(a) Find the slope of the line connecting the two points ( 0.2 , 350). Round to the nearest tenth as needed.

(b) Using a complete sentence, interpret the slope of the line found in part (a).