Question

I need help, i don’t understand this.

Answer 1

You're gonna be looking at the y coordinate for this one. 

x = 3 is y = -10 

x = 5 is y = -26 

The difference between the two is y = -10 and y = -26 

To get the difference, take x = 5 (y = -26) and subtract it from x = 3 (y = -10) 
-26 - (-10) = -16 

So, the difference between x = 3 (y = -10) and x = 5 (y = -26) is -16

Hope this helps you understand these problems for the future! 

~ ShadowXReaper069

Answer 2

(-26 + 10) / (5-3) = -16/2 = -8
answer
A. -8