Explanation:
The easy way to do this is to graph it
Now look at the graph, sense the line is negative the slope will be negative
Remember slope is always y/x
Now count the number of squares going up from (2,-2) to (2,4)
It’s 6 units
So far we have -6/x
To get x we now count the number of units from (0,4) to (2,4), 2 units
-6/2 is the slope
If you need it simplified divide each side by 2
-3 is also the slope
The reason you can find the slope like this is because if you had a line going straight up from (2,-2) and a line straight across from (0,4), (2,4) is the point where both those points intercept.