Question 113775: Find the slope of the graphed lines of 0 ,1, -2 and undefined. HUH? I dont get it.
Answer by MathLover1(20850)   (Show Source):
You can put this solution on YOUR website! We are going to calculate   in  over in ,or the  over the .
Here are examples for your lines:
Find the slope of the straight line that passes through ( ,  ) and ( ,  ) or state that the slope is undefined. Then indicate if the line through the points:
 (left to right),
this will be in case when  has positive value
 (left to right),
this will be in case when negative value
is  ,
this will be in case when is equal to 
or is 
. this will be in case when is undefined
1.
If the straight (for example)line that passes through (4,1) and (-2,1),then slope is:
Plug in  and  values into slope formula
.. Simplify
The slope of the line is .
Since the    , the  would be .
2.
If the straight line that passes through (-2, 3) and (-2, 5)
Plug in and values into slope formula
.. Simplify
The slope of the line is  .
Since the is , the would be .
3.
find the slope going from (-2,0) to (-1,-2)
Plug in and values into slope formula
.. Simplify
4.
find the slope passing through (1,0) to (-1,1)
Plug in and values into slope formula
.. Simplify
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