Monday, 5 December 2011

6.0 Systems of Linear Inequations

Today in class we looked at graphing inequalities. An inequality says that two values are not equal.
inequality.gif
We also did a work sheet about Amir buying nuts and raisins with $200, no more. We worked out the inequality of 25x+8y=200 to a y=mx+b formation so that we could graph it. (the picture is just an example) graphing-inequality-example1c.gif The line that was created was to be dashed to signify that we can only use information under the line, or Amir would be going over budget. We than did a test point to make sure all the information was correct. To do a test point, choose two points, under or over the line and substitute them for x and y and figure out the equation. The results should come out correct if the line is right.

ex.Inequality: x-3y>6
graphing formula: Y=1/3x-2
Test Point: (below) (2,2): 2-3(-2)>6 =8>6 <-yes, this is correct, 8 is greater than 6.

We than did three more examples of graphing inequalities before we were assigned the pages 303-305 #1-3,4,6,a,c,e,7,10

This lovely post was done by Amy,
I don't know who else has to go so Mr banow can choose.
:)

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