Question

Find the slope, if it exists, of the line containing the pair of points (-18,-16) (-20,-19).

Answer 1

y = mx + b
-16 = -18m + b
-19 = -20m + b

18m - 16 = b
20m - 19 = b

b = b
18m - 16 = 20m - 19
19 - 16 = 20m - 18m
3 = 2m
3/2 = m

Answer 2

I still don't understand much. What is the slope?

Answer 3

so the formula is

Answer 4

so the formula is

Answer 5

so the formula is

Answer 6

so the formula is

Answer 7

so the formula is

Answer 8

m = slope

Answer 9

@nelly4dust, Do you understand y = mx + b?