document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=210380>Question 210380</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Use the quadratic formula to determine the x intercepts (if any) of the following function.  Then evaluate the function for several values of x, and use the resulting points to graph the function.  Show your work.<BR>\n" );
document.write( "f(x)=7x^2-2\r<BR>\n" );
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document.write( "I have already come up with what I believe is the solution of the quadrtic, <BR>\n" );
document.write( "x=0.534  x= -0.534.I don't understand how to get the other points on the graph and have it look like it's supposed to.<BR>\n" );
document.write( "Thanks\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 #158977 by </B><A HREF=/tutors/aboutme.mpl?userid=vleith><B>vleith(2983)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=vleith><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=158977\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> You have the correct x intercepts. Now you need to find the minimum point. You can see by looking at the function that the value <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=0 ALIGN=MIDDLE  ALT=\"x=0\"   DISABLED_style= \"max-width:90%; height:auto;\" > will cause f(x) to be as small as it can get.<BR>\n" );
document.write( "So calculate f(0)<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=f%280%29+=+7%2A0%5E2+-+2 ALIGN=MIDDLE  ALT=\"f%280%29+=+7%2A0%5E2+-+2\"   DISABLED_style= \"max-width:90%; height:auto;\" > = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-2 ALIGN=MIDDLE  ALT=\"-2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Plot the points (0, -2), (0.534, 0) and (-0.534, 0)<BR>\n" );
document.write( "Now draw a nice parabola thru them. If you need more points, just pick some x values (like 1 and -1), evaluate f(x) at those values for x and then plot those points too<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=graph%28400%2C400%2C+-5%2C5%2C-10%2C10%2C+7x%5E2-2%29 ALIGN=MIDDLE  ALT=\"graph%28400%2C400%2C+-5%2C5%2C-10%2C10%2C+7x%5E2-2%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
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