SOLUTION: Hello, How would you solve 3x+y<9, then graph it?

Algebra ->  Inequalities -> SOLUTION: Hello, How would you solve 3x+y<9, then graph it?      Log On


   

Question 369949: Hello, How would you solve 3x+y<9, then graph it?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Graph the line, 3x%2By=9
y=-3x%2B9
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graph%28300%2C300%2C-10%2C10%2C-10%2C10%2C-3x%2B9%29
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Choose a point not on the line
(0,0) is always a convenient choice.
Test the inequality.
If the inequality is satisifed, shade the area containing (0,0).
If not, shade the region not containing (0,0).
3x%2By%3C9
3%280%29%2B0%3C9
0%3C9
True, shade the region containing (0,0).
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.
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Solved by pluggable solver: Plot Any Inequality
Graphing function 3x%2By%3C9:

graph%28+300%2C+300%2C+-10%2C+10%2C+-10%2C+10%2C+3x%2By%3C9+%29