the formula for slope is

so just replace y and x for the proper values
Step-by-step explanation:
this is the answer in the picture
<span>3 + ((-5) + 6) = (3 + (-5)) + 6
It's </span>associative property of addition
The associative property of addition states that you can add regardless of how the numbers are grouped, result will state the same.
good lesson and good day ^-^