The slope from the pair of points (-5,3)(5,-5)

Slope of (-5, 3) and (5, -5)

Slope formula : m = (y₂-y₁) / (x₂-x₁)

In this case, y₂=-5 ; y₁ = 3 ; x₂ = 5 ; x₁ = -5

So let's plug and chug! :P

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

Simplify.

m = -8/5+5

Simplify.

m = -8 / 10

Simplify.

m = -4/5

~Hope I helped!~