document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=200617>Question 200617</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/0078296374/algebrahomeworkh>Geometry</A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> A computer screen is a coordinate plane in which each pixel is one unit. A typical computer screen measures 640 pixels horizontally and 480 pixels vertically. The origin of the plane is the upper left corner of the screen, so all x-coordinates are positive and all y-coordinates are negative.<BR>\n" );
document.write( "A computer programmer wants to create a circle that is as large as possible for a typical screen. What is the equation of the circle?\r<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 #150874 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=150874\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A computer screen is a coordinate plane in which each pixel is one unit. A typical computer screen measures 640 pixels horizontally and 480 pixels vertically. The origin of the plane is the upper left corner of the screen, so all x-coordinates are positive and all y-coordinates are negative.<BR>\n" );
document.write( "A computer programmer wants to create a circle that is as large as possible for a typical screen. What is the equation of the circle?<BR>\n" );
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document.write( "The diameter is limited to 480 pixels, so the radius is 240.<BR>\n" );
document.write( "The center will lie on the horizontal line y = -240 and between the points (240,-240) and (400,-240).<BR>\n" );
document.write( "For the center at (240,-240), it's <BR>\n" );
document.write( "(x-240)^2 + (y+240)^2 = 240^2<BR>\n" );
document.write( "That circle will be tangent to the top, bottom and left side.<BR>\n" );
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document.write( "Changing the x term from x-240 to x-400 will move the circle from left to right.<BR>\n" );
document.write( "At (x-400), the circle will be tangent to the top, bottom and right side. </SPAN>\n" );
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