Consider the following expression and the simplified expression. Expression
Simplified Expression
3 x squared + 5 y squared box + 3 box + 4 y squared + 6
9 x squared minus y squared + 9

Which terms could be in the boxes to make the expressions equivalent?
Positive 6 x squared and Negative 6 y squared
Positive 6 x squared and Negative 10 y squared
Positive 9 x squared and Negative 10 y squared
Positive 9 x squared and Negative 6 y squared

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

25/14 or 1.

step-by-step explanation:

the dots mean that it has infinitely more numbers behind it

the answer is d

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