document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=394630>Question 394630</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I am trying to graph a function and I understand how to solve it. What I do not understand is knowing what number to plot for example F(x)=-3x. I am not sure how to determine which number I use to solve the formula. Please help I am failing this class. How do you determine what numbers to plug into the function I can graph it and solve it but do not understand what numbers to use. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #280004 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=280004\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  I am trying to graph a function and I understand how to solve it. What I do not understand is knowing what number to plot for example F(x)=-3x. I am not sure how to determine which number I use to solve the formula. <BR>\n" );
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document.write( "Some numbers are easier to work with than other, but the<BR>\n" );
document.write( "fact is you may choolse any numbers you want to.<BR>\n" );
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document.write( "An easy number to use is x= 0.<BR>\n" );
document.write( "Then F(0)  -3*0 = 0<BR>\n" );
document.write( "So you have one point: (0,0)<BR>\n" );
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document.write( "Pick any other number you care to:<BR>\n" );
document.write( "An easy number to use is x = 1.<BR>\n" );
document.write( "Then F(1) = -3*1 = -3<BR>\n" );
document.write( "So you have a 2nd point: (1,-3)<BR>\n" );
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document.write( "Plot those two points and draw a line thru them to get:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=graph%28400%2C300%2C-10%2C10%2C-10%2C10%2C-3x%29 ALIGN=MIDDLE  ALT=\"graph%28400%2C300%2C-10%2C10%2C-10%2C10%2C-3x%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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