Please tell me which ones are true

Option 1 is not true

Option 2 is true

Option 3 is true

Option 4 is false (a coefficient would just be the variable and only the variable.)

Option 5 is true

Option 6 is false.

Hope this helps and have a nice day.

-R3TR0 Z3R0

The answer is B!!

Step-by-step explanation:

I hope I helped! Pls give me brainliest if I did

answer is 144

step-by-step explanation:

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