fine the slope please

Question

x	y=f(x)
1	−8
2	−13
3	−18
4	−23
5	−28

determine the slope

Answer 1

m = (y₂ - y₁)/(x₂ - x₁)

All you need are two points. Since they gave you five, just pick any two: I'll choose (1, -8) & (3, -18) you can try this with any other pair you wish. We both should end up with the same answer.

Here my (1, -8) acts as my (x₁, y₁) and (3, -18) acts as my (x_2, y₂) thus,

m = (y₂ - y₁)/(x₂ - x₁) = (-18 - (-8))/(3 - 1) = -10/2 = -5

Hope this helps.

Mr. K