document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1137546>Question 1137546</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please help with this question. \r<BR>\n" );
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document.write( "A quadratic function has these characteristics:<BR>\n" );
document.write( "x = 1 is the equation for the axis of symmetry.<BR>\n" );
document.write( "x =  -  1 is an x-intercept.<BR>\n" );
document.write( "y =  -  4 is the minimum value.<BR>\n" );
document.write( "Determine the y-intercept of this parabola.<BR>\n" );
document.write( "Explain your thought process.\r<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #755424 by </B><A HREF=/tutors/aboutme.mpl?userid=greenestamps><B>greenestamps(13200)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=greenestamps><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/cgi-bin/show-face.mpl?user=greenestamps><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=755424\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <br><BR>\n" );
document.write( "The axis of symmetry is x=1, and one root is x = -1; therefore the other root is 3.  So the equation still in factored form is<br><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y+=+a%28x%2B1%29%28x-3%29 ALIGN=MIDDLE  ALT=\"y+=+a%28x%2B1%29%28x-3%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><br><BR>\n" );
document.write( "To find the value of a, use the fact that the minimum value is at (1,-4):<br><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-4+=+a%281%2B1%29%281-3%29+=+-4a ALIGN=MIDDLE  ALT=\"-4+=+a%281%2B1%29%281-3%29+=+-4a\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=a+=+1 ALIGN=MIDDLE  ALT=\"a+=+1\"   DISABLED_style= \"max-width:90%; height:auto;\" ><br><BR>\n" );
document.write( "So the equation is<br><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y+=+%28x%2B1%29%28x-3%29 ALIGN=MIDDLE  ALT=\"y+=+%28x%2B1%29%28x-3%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y+=+x%5E2-2x-3 ALIGN=MIDDLE  ALT=\"y+=+x%5E2-2x-3\"   DISABLED_style= \"max-width:90%; height:auto;\" ><br><BR>\n" );
document.write( "Then to answer the question that is asked, set x=0 to find that the y-intercept is (0,-3).<br><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=graph%28400%2C400%2C-4%2C4%2C-10%2C10%2C%28x%2B1%29%28x-3%29%29 ALIGN=MIDDLE  ALT=\"graph%28400%2C400%2C-4%2C4%2C-10%2C10%2C%28x%2B1%29%28x-3%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
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