document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=29562>Question 29562</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please help me with this function question\r<BR>\n" );
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document.write( "a) Use the graph to find the x interval(s) on which the function is positive.\r<BR>\n" );
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document.write( "b) Use the graph to find the x interval(s) on which the function is negative.\r<BR>\n" );
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document.write( "I only have the graph but not sure how to find the x interval.  What does it mean by positive and negative? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #16317 by </B><A HREF=/tutors/aboutme.mpl?userid=bmauger><B>bmauger(101)</B></A><img src=\"/images/stars/stars-09.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=bmauger><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=16317\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The function of x is the y value.  What the question is asking is what is the interval(s) when the function is positive, which means what are the x values when y>0. If our graph looked like this...<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=graph%28300%2C300%2C+-9%2C+6%2C+-25%2C+25%2C+x%5E2%2B3x-10%29 ALIGN=MIDDLE  ALT=\"graph%28300%2C300%2C+-9%2C+6%2C+-25%2C+25%2C+x%5E2%2B3x-10%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "...we would say the interval for which x is positive is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%3C-5 ALIGN=MIDDLE  ALT=\"x%3C-5\"   DISABLED_style= \"max-width:90%; height:auto;\" > OR <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%3E2 ALIGN=MIDDLE  ALT=\"x%3E2\"   DISABLED_style= \"max-width:90%; height:auto;\" > (look at the x axis if this is confusing)<BR>\n" );
document.write( "and the interval for which x is negative would then be: <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-5%3Cx%3C2 ALIGN=MIDDLE  ALT=\"-5%3Cx%3C2\"   DISABLED_style= \"max-width:90%; height:auto;\" > which is read as -5 is less than x which is less than 2. </SPAN>\n" );
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