Answer:
K= -5 because -10 divided by -5 which is K gives u 2
k =-2
Explanation:
Using the slope formula
( y2-y1)/(x2-x1) = m
( k- -1)/( -10 - -8) = 1/2
( k+1)/ ( -10+8) = 1/2
( k+1) /-2 = 1/2
Multiply each side by -2
( k+1) /-2 * -2 = 1/2 * -2
k+1 = -1
Subtract 1 from each side
k+1-1 = -1-1
k = -2
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