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the slope of every horizontal line is… a. 0 b. 1 c. d. undefined user: what is the slope of the line that contains the points (–6, 3) and (4, –5)? a. –4 b. c. d.

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1 vote

Answer: The answer is Undefined.

Step-by-step explanation:

A vertical line has undefined slope because all points on the line have the same x-coordinate. As a result the formula used for slope has a denominator of 0, which makes the slope undefined.

User Ken Sharp
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Horizontal lines have a slope of 0, just as vertical lines have a slope that is undefined.
=====================
slope = (y2 - y1) / (x2 - x1)
(-6,3)(4,-5)
slope = (-5 -3) / (4 - (-6) = -8 / (4 + 6) = -8/10 reduces to - 4/5
User Ahmet Gulden
by
7.6k points

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