Question 400600
y=3x+2;
You are given that 9< x <3 
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Multiply thru by 3 to get:
27 < 3x < 9
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Add 2 along the line to get:
29 < 3x+2 < 11
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Leave it that way or substitute to get:
29 < y < 11
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Cheers,
Stan H.