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OpenStudy (anonymous):
how do you graph 80x+40y=400 and 20x+80y=420
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OpenStudy (anonymous):
set x = 0 in first equation, 40y =400 so y = 10 mark the point (0,10) set y= 0 in first equation, 80x = 400 so x = 5 mark the point (5, 0) Join the two points with a straight line Do same for second equation.
OpenStudy (anonymous):
20x=420so x =21
OpenStudy (anonymous):
80y=420 is (0,5.25)
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