document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=75695>Question 75695</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/0072549017/algebrahomeworkh>Beginning Algebra </A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> Match each graph with the correct equation on the right.<BR>\n" );
document.write( "This graph is a curve graph that goes from points(-2, 20) down to (0,0) and back up to (2,20) on the graph. The equations are:<BR>\n" );
document.write( "a)y=-x^2+1<BR>\n" );
document.write( "b)y=2x<BR>\n" );
document.write( "c)y=x^2-4x<BR>\n" );
document.write( "d)y=-x=1<BR>\n" );
document.write( "e)y=-x^2+3x<BR>\n" );
document.write( "f)y=x^2+1<BR>\n" );
document.write( "g)y=x+1<BR>\n" );
document.write( "h)y=2x^2 <BR>\n" );
document.write( "Thanks for 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 #54390 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><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=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=54390\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Match each graph with the correct equation on the right.<BR>\n" );
document.write( "This graph is a curve graph that goes from points(-2, 20) down to (0,0) and back up to (2,20) on the graph.<BR>\n" );
document.write( ":<BR>\n" );
document.write( "The equations are:<BR>\n" );
document.write( "a)y=-x^2+1<BR>\n" );
document.write( "b)y=2x<BR>\n" );
document.write( "c)y=x^2-4x<BR>\n" );
document.write( "d)y=-x=1<BR>\n" );
document.write( "e)y=-x^2+3x<BR>\n" );
document.write( "f)y=x^2+1<BR>\n" );
document.write( "g)y=x+1<BR>\n" );
document.write( "h)y=2x^2<BR>\n" );
document.write( ":<BR>\n" );
document.write( "The problem here is, that none of the these equations would produce the given<BR>\n" );
document.write( "points, however the procedure is:  <BR>\n" );
document.write( ":<BR>\n" );
document.write( "You can eliminate all the equations that have a numerical value because of the<BR>\n" );
document.write( "given point: 0,0<BR>\n" );
document.write( "Cross out a, d, f, and g as possible answers<BR>\n" );
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document.write( "You can tell it is not a linear equation from the given points, Eliminate (b,<BR>\n" );
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document.write( "Also because the vertex is at 0, the 2nd term of the equation is 0 also<BR>\n" );
document.write( "Eliminate (c, (e<BR>\n" );
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document.write( "That leaves h) y = 2x^2<BR>\n" );
document.write( " y = 2(-2^2) = 8<BR>\n" );
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document.write( "Actually the equation that will produce the given points is y = 5x^2<BR>\n" );
document.write( "y = 5(-2^2) = 20 <BR>\n" );
document.write( "or<BR>\n" );
document.write( "y = 5(+2^2) = 20 <BR>\n" );
document.write( ":<BR>\n" );
document.write( "Looks like this:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+graph%28+300%2C+200%2C+-4%2C+4%2C+-5%2C+25%2C+5x%5E2%29+ ALIGN=MIDDLE  ALT=\"+graph%28+300%2C+200%2C+-4%2C+4%2C+-5%2C+25%2C+5x%5E2%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" >  \r<BR>\n" );
document.write( "\n" );
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document.write( "</TD></TR></TABLE>\n" );