Teacher2Teacher 
Q&A #202 
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From: Jonathan E Wickham To: Teacher2Teacher Public Discussion Date: 1999111423:55:52 Subject: Re: Graphing linear inequalities The arrow implies the ray goes on in the represented direction without end. Therefore, a ray aimed in the correct direction is of appropriate length no matter how long it is. Most texts I've seen show a ray above the number line. The key points would be: 1) ray pointed correctly, 2) algebraic inequality correctly written.
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