Question 969323
Slope is change in y divided by change in x.  You may do it in either direction so long as you are consistent.
The y values here are -3 and 4.  The difference is -3-4=-7.
The x values here are -2 and 5.  The difference is -2-5=-7

The slope is -7/-7  = 1

Done the other way, 4- (-3)/5-(-2)  = 7/7 or 1.

{{{graph(300,200,-7,7,-7,7, x-1)}}}