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Question

Solve the following systems of inequalities graphically:

3x+4y60,x+3y30,x0,y0

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Solution

The given inequality is 3x+4y60.

Draw the graph of the line 3x +4y =60.

Table of values satisfying the equation

3x +4y =60

x812y96

Putting (0,0) in the given inequation, we have 3×0+4×060060, which is true.

Half plane of 3x+4y60 is towards origin.

Also the given inequality is x+3y30.

Draw the graph of the line x+3y =30.

Table of values satisfying the equation

x+3y =30

x09y107

Putting (0,0) in the given inequation, we have 0+3×030030, which is true.

Half plane of x+3y30 is towars origin.


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