SOLUTION: Keir replaces the second equation in the system below with the second equation plus the 3 times the first equation. Which equivalent system of equations is the result?
{y=2x-7
{y
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{y=2x-7
{y
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Question 918430: Keir replaces the second equation in the system below with the second equation plus the 3 times the first equation. Which equivalent system of equations is the result?
{y=2x-7
{y=-6x+9
(Choices)
A.{y=2x-7
{y=-3
B.{y=2x-7
{y=0.5
C.{y=2x-7
{y=2
D.{y=2x-7
{y=12 Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! Keir replaces the second equation in the system below with the second equation plus the 3 times the first equation. Which equivalent system of equations is the result?
{y=2x-7
{y=-6x+9
-------
Ans::
{y = 2x-7
{y = -6x+9+3(2x-7) = -6x + 9 + 6x - 21 which simplifies to y = -12
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Cheers,
Stan h.
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