What is the slope of the line through 5 8 and 8 4 If the slo

What is the slope of the line through (5, 8) and (8, -4)? If the slope is undefined, type undefined. What is the slope of the line through (-5, 2) and (-5, -7)? If the slope is undefined, type undefined. What is the slope of the line through (5, 4) and (-1, 4)? If the slope is undefined, type undefined.

Solution

Slope = (y2 - y1) / (x2 - x1)

a)
(5,8)
(8,-4)

Slope = (-4-8) / (8-5)

Slope = -12/3

Slope = -4

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b)
(-5,2) and (-5,-7)

Sloe = (-7-2) / (-5-(-5))

Slope = (-9) / (-5 + 5)

Slope = -9/0

Slope = undefined

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c)
5,4 and -1,4

Slope = (4-4) / (-1-5)

Slope = 0/-6

Slope = 0