Which set of line segments could create a right triangle?

Answer question above and explain each step : )

Mrs. morton has a special reward system for her class. when all her students behave well, she rewards them by putting 3 marbles into a marble jar. when the jar has 100 or more marbles, the students have a party. right now, the the jar has 24 marbles. how could mrs. morton reward the class in order for the students to have a party?

15 there is a line that includes the point 0,10 and has a slope of 7/4. what is it’s equation in slope intercept form