Line l has a slope of 98. the line through which of the following pair of points is perpendicular to l? a. (−9,−,3) b. (9,−−6,6) c. (−5,−,3) d. (3,−−6,3)

m =( Y2 - Y1)/ (X2-X1)

m =( 3-(-5))/ (-6-3)

m = - 8/9

I am assuming you meant a slope of 9/8 in your original question, so the points perpendicular to I are answer D.

Perpendicular means the slope is opposite reciprocal of your first slope given.