gavinkvasnicka
gavinkvasnicka
27-02-2015
Mathematics
contestada
Linear Inequalities
9x-5y>20
Respuesta :
Panoyin
Panoyin
05-03-2015
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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