problem dealing with P.O.I. and equation of a line in 2d(impossible!!!)

hello, i recently had some homework to do for school and i came across a problem in the text that I couldn't solve so here is the problem and i will really appreciate it if somebody could solve it:

the line segment joining A(2,3) to B(9,2) is the hyptenuse of a right triangle. The third vertex, C, lies on the line with these parametric equations:

x = 2 + 2t

y = 8 -t

determine the coordinates of C.

thanks a lot for any help!(Clapping)