Given Coordinates: x1 = -1 y1 = 2, x2 = 3 y2 = -8
Slope Formula: m =
Substitute the given coordinates into the Slope Formula and Simplify:m =
Therefore, the Slope of a Line given points (-1, 2) and (3, -8) is equal to –
Note: As a decimal number, –
Slope Formula: m =
y2 − y1/x2 − x1
Substitute the given coordinates into the Slope Formula and Simplify:m =
-8 − 2/3 − (-1)
m = -8 − 2/3 + 1
m = -10/4
m = – 10/4
(Greatest Common Factor of 10 and 4, GCF(10, 4) = 2)m = – 5/2
Therefore, the Slope of a Line given points (-1, 2) and (3, -8) is equal to –
5/2
Note: As a decimal number, –
5/2
= -2.5