SOLUTION: For a homework assignment, I have to "find the slope of the line through each pair of points". The first example is (19, -16), (7,-15). I don't know where to start. Please help, a

Question 389163: For a homework assignment, I have to "find the slope of the line through each pair of points". The first example is (19, -16), (7,-15). I don't know where to start. Please help, and thanks in advance.
Jim Dunlap
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
Note:

is the first point

. So this means that and .
Also,

is the second point

. So this means that and .

Start with the slope formula.

Plug in , , , and

Subtract from to get

Subtract from to get

Reduce

So the slope of the line that goes through the points

and

is

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