Equation p=3s represents the perimeter p of an equilateral triangle with side length s. Is there a proportional relationship between the perimeter and the side length of an. Equilateral triangle

what are the options? ?

step-by-step explanation:

this is not the answer this is just a question. is this middle school math?

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