<PRE><B>Question 1052175</B>
 x=1/2y+9....como grafico y determino la pendiente y la ordenada ,la intersección con el eje x..creciente o decreciente 
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x = (1/2)y + 9
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(1/2)y = x-9
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y = 2x-18
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{{{graph(400,400,-10,20,-40,40,2x-18)}}}
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If x = 0, y = -18 ; plot (0,-18)
If x = 9, y = 0 ; plot (9,0)
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Draw a line thru those two points to see the graph.
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Since the slope is positive (2), the graph is increasing.
Cheers,
Stan H.
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