Answer:
The equation would be
and the answer is
.
Step-by-step explanation:
You need to use the formula 
You're points are (4,5) and (2,-6) or (4,5)(2,-6).
First: You need to label each point.
In (4,5), 4 is
and 5 is
.
In (2,-6), 2 is
and -6 is
.
Then you need to fill in the formula: 
Next, you subtract:
and
.
You get the fraction: 
Simplify if needed:
can't be simplified.
Finally, you get your answer:
because two negatives make a positive.
<em>Hope this helps.</em>