Asap! what is the slope and intercept of x=4 and x=-3

Adiverr from the university of florida women’s swimming and diving team is competing in the ncaa zone b championships

Which angle is the smallest? also give me an explanation so i can complete it to other questions as well, : )

Abag contains 5 red marbles , 6 blue marbles and 4 green marbles. susie selects a marble and returns it to the bag before selecting another marble. if susie selects a red marble 6 out of 20 times, what is the experimental probability that the next marble she selects will be a red marble ?