Pls help I will give brainliest . The answer choices are x=45, y=90
x=45, y=25
x=57, y=25
x=57, y=90

The answer is B

Step-by-step explanation:

Step-by-step explanation:

∠LKU = 1/2∠EKU ⇒ ∠LKU = 1/2(90°) = 45°

∠KCE = 90° as diagonals of a square are perpendicular

Correct option is C. x = 57, y = 25

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18