Which graph represents this system? y=1/2x+3 and y= 3/2x-1

C)

Step-by-step explanation:

The third graph represents this system.

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

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i hope this answer you! if you have any further questions or concerns, feel free to ask! : )

step-by-step explanation:

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