Question

A line has a slope of 9 the points are (0,10) and (-1,d) solve for d

Answer 1

d = 1
so the point would b (-1, 1)

Answer 2

slope = (y2-y1)/(x2-x1)

9 = (d-10)/(-1-0)

9 = (d-10)/-1

multiply by -1

-9 = d-10

add 10

1=d