Question 177199
Find the solutions that satisfy the following constraints:
a. 4A + 2B <16 (this is less than)
b. 4A + 2B >16 (this is greater than) 
c. 4A + 2B =16
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Graph the equality first;
B = -2A + 8
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{{{graph(400,300,-10,10,-10,20,-2x+8)}}}
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The graph of 4A + 2B < 16 is the half-plane BELOW the line.
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The graph of $A + 2B > 16 is the half-plane ABOVE the line.
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Cheers,
Stan H.