What is the slope of this line?
23
13
−13
−23
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Points
(0, -3) and (-3, -5)
(y - yo) = m.(x - xo)
(-5 - (-3)) = m.(-3 - 0)
(-5 + 3) = -3m
-2 = -3m
m = -2/-3
m = 2/3
Check the picture below.
[tex]\bf (\stackrel{x_1}{-3}~,~\stackrel{y_1}{-5})\qquad (\stackrel{x_2}{9}~,~\stackrel{y_2}{3}) \\\\\\ \stackrel{slope}{m}\implies \cfrac{\stackrel{rise} {\stackrel{y_2}{3}-\stackrel{y1}{(-5)}}}{\underset{run} {\underset{x_2}{9}-\underset{x_1}{(-3)}}}\implies \cfrac{3+5}{9+3}\implies \cfrac{8}{12}\implies \cfrac{2}{3}[/tex]