Y=(5x+3)2 linear or non linear

Given a(-12,5) and b(12,29) find the point that divides the line segment ab three-eighths of the way from a to b

According to modern science, earth is about 4.5 billion years old and written human history extends back about 10,000 years. suppose the entire history of earth is represented with a 10-meter-long timeline, with the birth of earth on one end and today at the other end.

For which pair of functions is (gof)(a)=|a|-2?