Mathematics, 06.10.2019 18:30 paulinahunl17

a system of equations and its solution are given below.

system a:
5x - y = -11
3x - 2y = -8
solution: (-2,1)

to get system b below, the second equation in system a was replaced by the sum of that equation and the first equation in system a multiplied by -2.

system b:
5x - y = -11
?

a.
the second equation in system b is 7x = 30. the solution to system b will be the same as the solution to system a.
b.
the second equation in system b is 7x = 30. the solution to system b will not be the same as the solution to system a.
c.
the second equation in system b is -7x = 14. the solution to system b will be the same as the solution to system a.
d.
the second equation in system b is -7x = 14. the solution to system b will not be the same as the solution to system a.

Answers: 2

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a system of equations and its solution are given below.

system a:
5x - y = -11