Unformatted text preview: urn to Problems] -2 - 5
0 - ( -1) 1 Again, watch out for minus signs. Here is a sketch of the graph. This line decreases as we move from left to right.
[Return to Problems] © 2007 Paul Dawkins 161 http://tutorial.math.lamar.edu/terms.aspx College Algebra (c) The line that contains the two points ( -3, 2 ) and ( 5, 2 ) .
Here is the slope for this line. m= 2-2
5 - ( -3) 8 We got a slope of zero here. That is okay, it will happen sometimes. Here is the sketch of the
line. In this case we’ve got a horizontal line.
[Return to Problems] (d) The line that contains the two points ( 4,3) and ( 4, -2 ) .
The final part. Here is the slope computation. m= -2 - 3 -5
0 In this case we get division by zero which is undefined. Again, don’t worry too much about this
it will happen on occasion. Here is a sketch of this line. This final line is a vertical line.
[Return to Problems] We can use this set of examples to see some general facts about lines.
First, we can see from the first two parts that the larger the number (ignoring any minus signs) the
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- Spring '12
- ........., Paul Dawkins