Verified Answer :

Panoyin

2x + y = 0
2x + 3 = 0
      - 3  - 3
      2x = -3
       2      2
         x = -1¹/₂
(x, y) = (-1¹/₂, 3)

calculista

we have
equation 1   \(2x+y=0\)

equation 2  \(y=3\)

substitute the equation 2 in equation 1
\(2x+[3]=0 \\ 2x=-3 \\ x=- \frac{3}{2}\)

the solution is the point
\((- \frac{3}{2} ,3)\)

using a graph tool
see the attached figure

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