Which of the following point-slope form equations could be produced with the points (5, 3) and (3, 7)?

y - 5 = 2(x + 3)

y - 3 = 2(x + 5)

y - 7 = -2(x - 3)

y - 5 = 2(x - 3)

Will mark 50 show all what is the solution to the system of equations? use the substitution method and show your work. -5x+y= -3 -15 x+3y=7 explain what your answer in part (a) tells you about the association of the lines in this system.