SOLUTION: Find the slope of the line containing the pair of points (-18,-9) and ((-19, -13)

Algebra ->  Linear-equations -> SOLUTION: Find the slope of the line containing the pair of points (-18,-9) and ((-19, -13)      Log On


   

Question 730492: Find the slope of the line containing the pair of points
(-18,-9) and ((-19, -13)
Found 2 solutions by rfer, mananth:
Answer by rfer(16322) About Me  (Show Source):
You can put this solution on YOUR website!
slope
m=(-13--9)/(-19--18)
m=-4/-1
m=4

Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
x1 y1 x2 y2
-18 -9 -19 -13

The general equation of the line when co-ordinates of two points are given is

%28y-%09y1%29%2F%28%09y1-y2%29+=+%28x-x1%29%2F%28x1-x2%29




%28y-%099++++++%09%29%2F%28%094++++++%09%29=%28x%2B%0918++++++%09%29+%2F%28%091++++++%09%29

+%091+++++%09%28y-%099++++++%09%29+=%094++++++%09%28x-%09-18++++++%09%29

y- 9 = 4 x -72

1 y= 4 x -63
/ 1
y= 4 x-63