Tuesday
November 25, 2014

Homework Help: Algebra

Posted by Katy on Thursday, February 12, 2009 at 6:07pm.

Write a system of inequalities to describe the shaded area of the graph.

This is the question on my homework today that i just don't get. My teacher said to use point slope form.
y=y1+m(x-x1)
The coordianate points of the triangular area are
line 1: (2,1),(7,9)
line 2: (7,9),(11,3)
line 3: (2,1), (11,3)
(i wish that i could just show you the graph.
Kay, so i know that lines 1 and 2 are going to be less than or equal to, and line 3 will be greater than or equal to. However, after I put it into the formula, (which i don't think i got quite right) i don't know if that's the final part of writing the system.
for line 1, i think that i got something like:
(7,9) y=9+8/5(x-7)
Is this right? Also, is this the last part of making this fit into a system?(i think it looks too wierd to leave like that) Any help or tips is VERY much appreciated. Thanks.

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