50 points
triangle abc and triangle cde are similar right triangles. which proportion can be used to show that the slope of ac is equal to the slope of ce?

a)
6 − 2
9 − 3
=
8 − 6
12 − 9

b)
6 − 2
9 − 3
=
12 − 6
8 − 9

c)
8 − 6
9 − 3
=
6 − 2
12 − 9

d)
9 − 3
6 − 2
=
8 − 6
12 − 9