Determine the coordinates of the points three-forths of the way from a(-9,3) and (-1,-7).

What i did so far was solve the change in x and y between the given points by 4

change in x=-1+9/4 =2 change in y=-7-3/4 = -5/2

so then I got (-9,3),(-7,1/2),(-5,-2),(-3,-9/2),(-1,-7)

Im not sure which one would be "three-forth". Have i dont this question right? and which one would be three-forth?

Thank you for the help.