document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=186277>Question 186277</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hi my name is Brandie. My teacher gave me a math problem to day and I can't get it. The problem is:<BR>\n" );
document.write( "The table is for a quadratic equation- \r<BR>\n" );
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document.write( "x,	     y<BR>\n" );
document.write( "-3,	     0<BR>\n" );
document.write( "-2,	    -7<BR>\n" );
document.write( "-1,	    -8<BR>\n" );
document.write( "0,	    -3<BR>\n" );
document.write( "1,	     ?\r<BR>\n" );
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document.write( "Determine the quadratic equation using the information from the table. And solve for '?'. I don't understand how I'm suppose to do this. Can you because help me. This is the only problem I can't get. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #139632 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=139632\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The table is for a quadratic equation-<BR>\n" );
document.write( "x, y<BR>\n" );
document.write( "-3, 0<BR>\n" );
document.write( "-2, -7<BR>\n" );
document.write( "-1, -8<BR>\n" );
document.write( "0, -3<BR>\n" );
document.write( "1, ?<BR>\n" );
document.write( "Determine the quadratic equation using the information from the table. And solve for '?'. <BR>\n" );
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document.write( "Using the form: ax^2 + bx + c = y solve for a, b, c<BR>\n" );
document.write( "c is the y intercept (x=0), notice in the table when x=0, y = -3<BR>\n" );
document.write( "therefore we know that c = -3<BR>\n" );
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document.write( "Solve for a and b, take the values for x and y from the given table:<BR>\n" );
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document.write( "when x=-3; y=0<BR>\n" );
document.write( "(-3^2)a + (-3)b - 3 = 0<BR>\n" );
document.write( "9a - 3b = +3<BR>\n" );
document.write( "simplify, divide equation by 3:<BR>\n" );
document.write( "3a - b = 1<BR>\n" );
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document.write( "when x=-1, y=-8<BR>\n" );
document.write( "(-1^2)a + (-1)b - 3 = -8<BR>\n" );
document.write( "a - b = -8 + 3<BR>\n" );
document.write( "a - b = -5<BR>\n" );
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document.write( "Use these two equations for elimination <BR>\n" );
document.write( "3a - b = 1<BR>\n" );
document.write( "a  - b = -5<BR>\n" );
document.write( "---------------subtraction eliminates b, find a<BR>\n" );
document.write( "2a = +6<BR>\n" );
document.write( "a = 3<BR>\n" );
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document.write( "Find b using 3a - b = 1, substitute 3 for a<BR>\n" );
document.write( "3(3) - b = 1<BR>\n" );
document.write( "9  - b = 1<BR>\n" );
document.write( "-b = 1 - 9<BR>\n" );
document.write( "-b = -8<BR>\n" );
document.write( "b = +8<BR>\n" );
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document.write( "The quadratic equation; y = 3x^2 + 8x - 3<BR>\n" );
document.write( "You can check to see if this is true<BR>\n" );
document.write( "substitute the given x values in the equation, see if it = y<BR>\n" );
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document.write( "Regarding the question mark, find y when x = 1\"<BR>\n" );
document.write( "y = 3(1^2) + 8(1) - 3<BR>\n" );
document.write( "y = 3 + 8 - 3<BR>\n" );
document.write( "y? = 8<BR>\n" );
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document.write( "Did this make sense to you? </SPAN>\n" );
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