document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=459636>Question 459636</A>: <I><SPAN STYLE=\"word-break: break-all;\"> you provide great, can someone help me with these problems\r<BR>\n" );
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document.write( "Find all x intercepts of the given f(x) =-9sqrt x + 18\r<BR>\n" );
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document.write( "Find the quadratic equatioin that fits the following set of data points<BR>\n" );
document.write( "((3,66),(-4,38),(-1-10))\r<BR>\n" );
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document.write( "Thank you </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #315180 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=315180\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Find all x intercepts of the given f(x) = -9sqrt x + 18<BR>\n" );
document.write( "y = 0 for all x-intercepts<BR>\n" );
document.write( "Solve -9x^2+18 = 0<BR>\n" );
document.write( "Divide thru by -9 to get:<BR>\n" );
document.write( "x^2-2 = 0<BR>\n" );
document.write( "x^2 = 2<BR>\n" );
document.write( "x = +/-sqrt(2) <BR>\n" );
document.write( "____________________________________________________________<BR>\n" );
document.write( "Find the quadratic equation that fits the following set of data points<BR>\n" );
document.write( "((3,66),(-4,38),(-1-10))<BR>\n" );
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document.write( "Form: ax^2 + bx + c = y<BR>\n" );
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document.write( "Substitute for (x,y) and solve for a,b,c:<BR>\n" );
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document.write( "Using (3,66): 9a + 3b + c = 66<BR>\n" );
document.write( "Using(-4,38): 16a- 4b + c = 38<BR>\n" );
document.write( "Using(-1,-10):: a - b + c = -10<BR>\n" );
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document.write( "Use any method you know to solve the system to get:<BR>\n" );
document.write( "a = 5<BR>\n" );
document.write( "b = 9<BR>\n" );
document.write( "c = -6<BR>\n" );
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document.write( "Equation: y = 5x^2+9x-6<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. <BR>\n" );
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