document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=35506>Question 35506</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Can someone please help me understand graph's before my final next week.<BR>\n" );
document.write( "I have 2 questions.<BR>\n" );
document.write( "1) It shows a graph given by a quadratic function of the form<BR>\n" );
document.write( "   f(x)=ax^2, which of these 3 functions matches. The graph shows<BR>\n" );
document.write( "   a staight line going thru Y at (-2,2) & (2,2)<BR>\n" );
document.write( "A)f(x)=2x^2<BR>\n" );
document.write( "B)f(x)=3x^2<BR>\n" );
document.write( "C)f(x)=1/2x^2<BR>\n" );
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document.write( "2) It shows a graph is froma quadratic function of the form<BR>\n" );
document.write( "   f(x)=(x-h)^2 with a symmetry x=-3 and vertex (-3,0). Which<BR>\n" );
document.write( "   of these 3 matches.<BR>\n" );
document.write( "A)f(x)=(x-3)^2<BR>\n" );
document.write( "B)f(x)=(x+3)^2<BR>\n" );
document.write( "C)f(x)=(x+2)^2\r<BR>\n" );
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document.write( "Thanks for all your help<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 #21644 by </B><A HREF=/tutors/aboutme.mpl?userid=rapaljer><B>rapaljer(4671)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=rapaljer><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=rapaljer><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=21644\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> You don't have to draw a graph, although if you have one in front of you in the problem, it will help.  Just take the given values of x, substitute these into the three given functions, and see which function gives you the correct y values.\r<BR>\n" );
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document.write( "1.  If x = -2, then y = 2,  and   if x = 2, then y = 2.\r<BR>\n" );
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document.write( "A) f(x) = 2x^2<BR>\n" );
document.write( "-> f(-2) = 2(-2)^2 = 8.  This does NOT work, so it is eliminated.\r<BR>\n" );
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document.write( "B) f(x) = 3x^2<BR>\n" );
document.write( "-> f(-2) = 3(-2)^2 = 12.  Again, this does NOT work.\r<BR>\n" );
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document.write( "C) f(x) = 1/2 x^2<BR>\n" );
document.write( "-> f(-2) = 1/2* (-2)^2 = 1/2*4= 2.  This one checks.<BR>\n" );
document.write( "-> f(2) = 1/2* (2)^2 = 1/2*4= 2.  This one also checks.\r<BR>\n" );
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document.write( "Therefore the answer is C.\r<BR>\n" );
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document.write( "Likewise you can do the second problem, right???\r<BR>\n" );
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document.write( "R^2 at SCC\r<BR>\n" );
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