What is 3/4 minus 1/5

Come up with a new linear function that has a slope that falls in the range 10 m − < < . choose two different initial values. for this new linear function, what happens to the function’s values after many iterations? are the function’s values getting close to a particular number in each case?

Icould really use some with this question.

What function has a range {yly< 5}? question on picture above^