<body><script type="text/javascript"> function setAttributeOnload(object, attribute, val) { if(window.addEventListener) { window.addEventListener('load', function(){ object[attribute] = val; }, false); } else { window.attachEvent('onload', function(){ object[attribute] = val; }); } } </script> <div id="navbar-iframe-container"></div> <script type="text/javascript" src="https://apis.google.com/js/platform.js"></script> <script type="text/javascript"> gapi.load("gapi.iframes:gapi.iframes.style.bubble", function() { if (gapi.iframes && gapi.iframes.getContext) { gapi.iframes.getContext().openChild({ url: 'https://www.blogger.com/navbar.g?targetBlogID\x3d14085375\x26blogName\x3dPre-Cal+20S\x26publishMode\x3dPUBLISH_MODE_BLOGSPOT\x26navbarType\x3dBLUE\x26layoutType\x3dCLASSIC\x26searchRoot\x3dhttps://pc20s.blogspot.com/search\x26blogLocale\x3den_US\x26v\x3d2\x26homepageUrl\x3dhttp://pc20s.blogspot.com/\x26vt\x3d563388513742822071', where: document.getElementById("navbar-iframe-container"), id: "navbar-iframe" }); } }); </script>

Tuesday, September 27, 2005

Graphs - One Perspective

Today we learned how to graph a line by generating a table of values from an equation. Here is a review.

You can use this tool to generate a table of values and a graph from any linear function. Follow these steps:

  1. Enter the expression in the box next to f(x) =. i.e. if the equation is y = 2x - 1, enter 2x - 1 in the box.


  2. In the boxes under Values of x enter the x-values, say from -3 through 3. You can enter more if you like.


  3. Click on the button marked [Evaluate] to find all the corresponding y-values (y-coordinates).


  4. Enter the ordered pair [(x, y)] with the smallest x-coordinate -- i.e. (-3, y) -- in the box next to Left End-Point: do the same for the largest x-coordinate -- i.e. (3, y) -- in the box next to Right End-Point:


  5. Click the button marked [Graph] to see the graph.


  6. Click the button [Erase Everything] to begin again with a new equation.


We're going to spend the next several days talking about the equations of lines. Remember the 4 perspectives of the same object (my block of wood) we discussed in class today -- it's going to come up a lot. ;-)

0 Comments:

Post a Comment

<< Home