document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=421878>Question 421878</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Prove that the graph of any equation of the form y=ax^2+bx+c has exactly one y-intercept. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #294531 by </B><A HREF=/tutors/aboutme.mpl?userid=Theo><B>Theo(13342)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Theo><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=Theo><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=294531\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> the equation is y = ax^2 + bx + c\r<BR>\n" );
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document.write( "the y intercept is the value of y when the value of x is 0.\r<BR>\n" );
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document.write( "when the value of x is 0, this equation becomes y = a*0 + b*0 + c which becomes y = c\r<BR>\n" );
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document.write( "there is only 1 value of c that can satisfy this equation, and that is the value of c that is given at the start of the equation.\r<BR>\n" );
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document.write( "example:\r<BR>\n" );
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document.write( "y = 20x^2 + 30x + 15\r<BR>\n" );
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document.write( "when x = 0, this becomes y = 20*0 + 30*0 + 15 which reduces to y = 15.\r<BR>\n" );
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document.write( " </SPAN>\n" );
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