Question 113650: Find the slope of any line parallel to the line through points (7, 9) and (9, 8)
Answer by jim_thompson5910(21685)   (Show Source):
You can put this solution on YOUR website!First find the slope through (7, 9) and (9, 8)
| Solved by pluggable solver: Finding the slope |
To find the slope going from (7,9) to (9,8) we are going to calculate the change in y over the change in x, or the rise over the run. The change is the difference between the two coordinates. So if the y-coordinate of a point goes from 9 to 8, the change in these numbers is -1 (since  ). If the x-coordinate changes from 7 to 9, then the change is 2 (since  ). So to calculate the slope we use this formula:
Slope:
 where m is the slope
So now we let  , , , Now plug these numbers into the slope formula:
So after simplification the slope is  |
So any parallel line will also have a slope of 
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