Which system of equations can be graphed to find the solution(s) to 4x2 = x2 + 7? ly= 3x²
ly=x²+7
ly=3x²+7
ly=x²+7
Jy=4x²
ly=x²+7
ly=4x²
ly=4x²+7

this question is completely messed up

Step-by-step explanation:

i dont get it at all

im sorry

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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step-by-step explanation:

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