The graph of linear function g passes through the points (-1,8) and (4,-7). Please help me

Which statement must be true?

Find the value of x. give reasons to justify your solutions! c ∈ ae

Two cars which are 40 miles apart start moving simultaneously in the same direction with constant speeds. if the speed of the car which is behind is 56 mph and the speed of the other car is 48 mph, how many hours will it take for the car which is behind to catch up the car ahead of it?

Cd is the perpendicular bisector of both xy and st, and cy=20. find xy.