Question 81146: The boundary line of y>3 is graphed, how do I determine the correct half-plane and complete the graph?
Answer by scott8148(6628)   (Show Source):
You can put this solution on YOUR website! since this is a "greater than" inequality with no "equal to", the boundry line is dashed as opposed to solid
to determine the correct half-plane, pick a point (I use the origin, if possible) on one side of the line and see if it satisfies the inequality ... if it does, then shade that side; if it doesn't, shade the other side
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