document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1134894>Question 1134894</A>: <I><SPAN STYLE=\"word-break: break-all;\"> f-stop and aperture diameter\r<BR>\n" );
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document.write( "the relative aperture or f-stop for a camera lens is inversely proportional to the diameter of the aperture an f-stop of 2.8 corresponds to an aperture diameter of 75 millimeters for a certain telephoto lens\r<BR>\n" );
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document.write( "a. find the equation that relates f-stop and diameter<BR>\n" );
document.write( "b. graph the equation from part a. in the first quadrant only.<BR>\n" );
document.write( "c. what aperture diameter corresponds to an f-stop of 5.6 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #752449 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=752449\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> the relative aperture or f-stop for a camera lens is inversely proportional to the diameter of the aperture an f-stop of 2.8 corresponds to an aperture diameter of 75 millimeters for a certain telephoto lens<BR>\n" );
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document.write( "a. find the equation that relates f-stop and diameter<BR>\n" );
document.write( "f = k/d<BR>\n" );
document.write( "2.8 = k/75 --> k = 210<BR>\n" );
document.write( "f = 210/d<BR>\n" );
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document.write( "b. graph the equation from part a. in the first quadrant only.<BR>\n" );
document.write( "Use d for the x-axis, f for the y-axis<BR>\n" );
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document.write( "c. what aperture diameter corresponds to an f-stop of 5.6<BR>\n" );
document.write( "5.6 = 210/d<BR>\n" );
document.write( "d = 210/5.6<BR>\n" );
document.write( "d = 37.5 mm </SPAN>\n" );
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