Question 547229: What is the slope of the line that contains the points (-6,8) and (6,-2) Found 2 solutions by mathie123, Edwin McCravy:Answer by mathie123(224) (Show Source):
You can put this solution on YOUR website! We have a formula for finding slope given two points (x_1,y_1) and (x_2,y_2).
Substituting the two points we have we get
where m is the slope we are looking for
The other tutor used the formula. Here is the GRAPHICAL method.
Start at the lower point and draw a vertical line upward until it is
exactly right of the upper point:
That's the RISE. Count the blocks that make up its length, which is 10
units. It goes up, so its value is POSITIVE. So the RISE = +10.
Now start where the green RISE stopped and draw a horizontal line
leftward until it is on the upper point:
That's the RUN. Count the blocks that make up its length, which is 12
units. It goes LEFT, so its value is NEGATIVE. So the RUN = -12
SLOPE = = =
Edwin
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