There are three different graphs that one could stumble across when dealing with systems of inequalities. The equation of a line is y=mx+b, a parabola y=(x-h)^2+k, and the circle x^2+y=r^2. From one of these equations then, you have to pick a test point. Finally, you have to shade the plane containing the test point. If the test point satisfies the equations. If the sign of the inequality equation is greater than or equal to you, then the line of the graph would be solide. However, if the equation is less than one, then the line of the graph will be dotted.
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