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Grazieli
Monte o gráfico de 9x + 5y = 45.
y 9- 8- 7- 6+ 5 4+ 3 2 1 X -9-8-7-6-5-4-3-2 1 2 3 4 5 6 7 8 9 -2- -3- -4- -5- -6- 7- -8- -9-
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