To prove that ADFE - AGFH by the SSS similarity theorem using the information provided in the diagram,
it would be enough additional information to know that
HF is 2 units and GH is 3 units.
O HF is 3 units and GH is 2 units.
HF is 4 units and GH is 2 units.
HF is 3 units and GH is 4 units.

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

the correct answer is $7.38

step-by-step explanation: