Answer:
Elimination
Step-by-step explanation:
You would not do substitution since it would not work so you do elimination since the 4y and -4y eliminate then you just solve for it.
Area = Area of Rectangle + Area of Triangle
Area = (bh) + (1/2bh)
Area = (9 * 2) + (1/2 * 9 * 6)
Area = 18 + 27
Area = 45 units squared
50 /10 = 5
5 * 9 = 45
45 is 9/10 of 50