X + 7y = 0 2x − 8y = 22
x − y = 3 7x − y = −3
−9 + 5y = −4x −11x = −20 + 9y
y = 4x − 9 y = x − 3
Tell which method you used to solve each system and why you chose that method.

r(0,90)(x,y) . t(-5,0)

last option

step-by-step explanation:

∆def to ∆d"e"f"

- rotate 90 counterclockwise degrees

- then translated 5 to the left (x --> x - 5)

answer is the last option

x = 23.78

step-by-step explanation: