What set of transformations could be applied to rectangle ABCD to create A″B″C″D″?

Reflected over the x‒axis and reflected over the y-axis
Reflected over the y-axis and rotated 180°
Reflected over the x‒axis and rotated 90° counterclockwise
Reflected over the y-axis and rotated 90° counterclockwise

Reflected over the y-axis

Step-by-step explanation:

Reflected over the y-axis and reflected over the y-axis

Step-by-step explanation:

ab will be equal to

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