Question

What is the slope of the line that contains these points?

x

39

40

41

42

y

36

29

22

15

Answer 1

Slope = -7

Explanation:

Take any two points from the table:

(39 , 36) ⇒ x₁ = 39 & y₁ = 36

(41 , 22) ⇒ x₂ = 41 & y₂ = 22

Substitute the points in the below formula:

`\boxed{\bf Slope = (y_2-y_1)/(x_2-x_1)}`

`\sf = (22-36)/(41-39)\\\\\\=(-14)/(2)\\\\=-7`