A ray is noted by which symbol

Angela rode his bike around a bike trail that was 1/4 of a mile long he rode his bike around the trail 8 * angelo says he wrote a total of 8/4 miles to russell says he's wrong and he actually and says that he actually wrote to my who is corrupt use words and trying to explain how you know.

Plzzz i beg u so much asaaaap ! what is the slope of this line? enter your answer in the box.

Last one and the bottom answer choice is y=(x-4)^2+1 you guys!