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27-06-2018
Mathematics

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Use substitution to solve the linear system of equations. y=-3x+1 y=2x-4 (-2, 1) (1,-2) (1,2) (-1, -2)

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27-06-2018

[tex]\left\{\begin{array}{ccc}y=-3x+1\\y=2x-4\end{array}\right\\\\-3x+1=2x-4\ \ \ |-1\\-3x=2x-5\ \ \ \ |-2x\\-5x=-5\ \ \ \ |:(-5)\\x=1\\\\y=2x-4\to y=2\cdot1-4=2-4=-2\\\\Answer:\ (1;-2)[/tex]

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