What is the pre-image of vertex A' if the image shown on the graph was created by a reflection across the y-axis? (–8, –6) (–6, 8) (8, 6) (6, –8)

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

i agree because i see the other persons thinking is clear

answer: the answer is b. i think hope i got it correct

step-by-step explanation: