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 y-intercepts 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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