Answered

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Linear Inequalities

9x-5y>20

Sagot :

Panoyin
9x - 5y > 20
9x - 9x - 5y > 20 - 9x
-5y > 20 - 9x
 -5        -5
y > -4 + 9/5x
9x - 5(-4 + 9/5x) > 20
9x + 20 + 9x > 20
9x + 9x + 20 > 20
18x + 20 > 20
        -20    -20
       18x > 0
        18    18
         x > 0
9(0) - 5y > 20
0 - 5y > 20
+0          +0
    -5y > 20
     -5     -5
       y > -4
 (x, y) > (0, -4)
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