Given the inequality:
[tex]3x+9y<18[/tex]to find which point is a solution to the inequality, there are 2 methods to solve :
by graphing or by substitution by the point in the given inequality
Solving by substitution :
1) point (2 , 2)
so,
[tex]3\cdot2+9\cdot2=24>18[/tex]So, this point is not a solution
2) Point (-3 , -4)
[tex]3\cdot-3+9\cdot-4=-45<18[/tex]This point is a solution
3) Point (0 , 2)
[tex]3\cdot0+9\cdot2=18[/tex]So, this point is not a solution
Another sol
