Vianas2009idn
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Solve the system of inequalities by graphing 3x-y>-1
2x+y>5

Sagot :

Panoyinidn
       3x - y > -1
3x - 3x - y > -1 - 3x
             -y > -1 - 3x
              y > 1 + 3x

       2x + y > 5
2x - 2x + y > 5 - 2x
               y > 5 - 2x

       1 + 3x > 5 - 2x
          + 2x      + 2x
       1 + 5x > 5
     - 1          - 1
             5x > 4
              5     5
               x > 0.8
  1 + 3(0.8) > 5 - 2(0.8)
   3(0.8) - y > -1     
       2.4 - y > -1
     - 2.4        - 2.4
              -y > -3.4
               y > 3.4
         (x, y) > (0.8, 3.4)
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