<PRE><B>Question 983057</B>
1) x/3 - y/4 = 2x - y +12 
multiply both sides of = by 12
4x - 3y = 24x - 12y + 144
9y = 20x + 144
y = (20x/9) + 16
this is a line, here is its graph.  note that each point(x,y) on the line is a solution, for example (0, 16) is a solution
here is its graph
{{{ graph( 300, 200, -20, 20, -20, 20, (20x/9) + 16 ) }}}
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2) let x be the number of product A items and y be the number of product B items, then
a) 6x + 4y = 500
b) (6*50) + 4y = 500
300 + 4y = 500
4y = 200
y = 50, therefore
50 units of product B should be produced 


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