HELP ASAP Answer two questions about Systems AAA and BBB: System AAA \text{\quad}start text, end text System BBB
\begin{cases}x+3y=-92x+y=4\end{case s}
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x+3y=−9
2x+y=4
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\begin{cases}3x+4y=-92x+y=4\end{cas es}
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⎪
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⎪
⎪
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3x+4y=−9
2x+y=4
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1) How can we get System BBB from System AAA?
Choose 1
Choose 1

(Choice A)
A
Replace one equation with the sum/difference of both equations

(Choice B)
B
Replace only the left-hand side of one equation with the sum/difference of the left-hand sides of both equations

(Choice C)
C
Replace one equation with a multiple of itself

(Choice D)
D
Replace one equation with a multiple of the other equation
2) Based on the previous answer, are the systems equivalent? In other words, do they have the same solution?
Choose 1
Choose 1

(Choice A)
A
Yes

(Choice B)
B
No