Explanation:
1). 50 x 2 = 100 ; 23 x 2 = 46 (shade 46 squares)
2). 20 x 5 = 100 ; 11 x 5 = 55 (shade 55 squares)
The parallel lines have the same slope.
The formula of a slope:

We have the points (2, 5) and (6, -11).
Substitute:

Answer:
(9, 3)
Step-by-step explanation:
When a point is rotated 180 degrees, you take the opposite of the coordinates.
i.e (5, 6) ---> (-5, -6)
24 divided by 8 equals 3
12 divided by 3 is 4
3 times 7 is 21
2 times 6 is 12
5 times 6 is 35
16 divided 4 is 4