document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=211624>Question 211624</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find value of c so that the point (4,2) lies on the graph of the function f(x)=cx^2+3x-4 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #159902 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=159902\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Find value of c so that the point (4,2) lies on the graph of the function f(x)=cx^2+3x-4<BR>\n" );
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document.write( "Substitute those values and solve for \"c\":<BR>\n" );
document.write( "2 = c(4)^2 + 3*4 - 4<BR>\n" );
document.write( "16c + 12 - 6 = 0<BR>\n" );
document.write( "16c = -6<BR>\n" );
document.write( "c = -3/8<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );