Question 792581: How do you shade a graph when there's more than one inequality? Say 2-3 inequalities on 1 graph.
Answer by josgarithmetic(39627)   (Show Source):
You can put this solution on YOUR website! Far easier to do on paper. Not sure how to do it through the algebra.com system.
Make all you equations in function form. Indicate each EQUALITY, but make these ways of showing the function: Different Than Or Equal, use a solid curve or line; Strict Inequality, use a dotted curve or line.
Shade the region corresponding to the set of points which satisfy the inequality, using penciled close, light markings like close lines running all in a single direction; use a different direction for each function. Some of these light, close markings will intersect and will show increased level of shading and the viewer will visually notice the cross-markings.
The darkest shading will correspond to the region of points which satisfies all of the inequalities.
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