Question

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

Answer 1

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`