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The points (4,k) and (5,-8) fall on a line with a slope of -7. what is the value of k?

The points (4,k) and (5,-8) fall on a line with a slope of -7. what is the value of k?
asked 10.0k views
1 vote
The points (4,k) and (5,-8) fall on a line with a slope of -7. what is the value of k?

asked
User Ivo Jansch
by
8.3k points

1 Answer

3 votes

Answer:

k= -1

Explanation:

To find k, use the points and the m =-7 in the slope formula:


m=(y_2-y_1)/(x_2-x_1)\\\\-7=(-8-k)/(5-4) \\\\-7 = (-8-k)/(1)\\\\-7=-8-k\\\\k = -8+7\\\\k=-1

answered
User Koto
by
8.5k points
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