Posted by Bradley on Thursday, April 4, 2013 at 2:19pm.
How do I solve:
6x+4y>=80
6x+4y<=170

math  Wayne, Thursday, April 4, 2013 at 3:01pm
no solutions, or empty set
solve both equations for y:
y >= 1.5x + 20
y <= 1.5x + 42.5
Same slope with different yintercepts indicates parallel lines;
Graph both, which shows the solution set: solutions for 1st equation are above the line, and solutions for 2nd equation are below the line, which means no point(s) of commonality.
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