document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=298171>Question 298171</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.   f(x)=x^2-4x+4\r<BR>\n" );
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document.write( "       Using the formula My answer was x=2.  but I don't have a clue how to get other values for x.    I thought if the discriminant was 0, which it is, that you could only have one rational solution?????   Please help..really want to figure out how to do this problem </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #214870 by </B><A HREF=/tutors/aboutme.mpl?userid=user_dude2008><B>user_dude2008(1862)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=user_dude2008><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=214870\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> just pick random x's, plug them in to get y's\r<BR>\n" );
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document.write( "x=-1: f(-1)=(-1)^2-4(-1)+4=1+4+4=9 ----> x=-1, y=9 ---> (-1,9)<BR>\n" );
document.write( "x=0: f(0)=0^2-4(0)+4=0-0+4=4 ----> x=0, y=4 ---> (0,4)<BR>\n" );
document.write( "x=1: f(1)=1^2-4(1)+4=1-4+4=1 ----> x=1, y=1 ---> (1,1)<BR>\n" );
document.write( "x=3: f(3)=3^2-4(3)+4=9-12+4=1 ----> x=3, y=1 ---> (3,1)<BR>\n" );
document.write( "x=4: f(4)=4^2-4(4)+4=16-16+4=4 ----> x=4, y=4 ---> (4,4)<BR>\n" );
document.write( "x=5: f(5)=5^2-4(5)+4=25-20+4=9 ----> x=5, y=9 ---> (5,9)\r<BR>\n" );
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document.write( "Next plot points and connect dots </SPAN>\n" );
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