Answer:
Line that passes through the points (-6,5) and (-2,7) is,
y=x/2+8, slope is 1/2
line that passes through the points (4,2) and (6,6) is,
y=2x-6, slope is 2
so, there is no relationship between those two lines,
intersection point is (28/3,38/3)
C would equal 20. because 12 times its self plus 16 times its self equals 400. then I square 400 and got 20, which equals c
I hope my explanation helps