Hello! 
To find the slope of line, we will need to use the slope formula. 
The slope formula is: 
 .
.
Before the use the formula, we should assign the ordered pairs to 
 and
 and 
 .
. 
(3, -6) can be assigned to 
 and (9, 2) is assigned to
 and (9, 2) is assigned to 
 . With that, we can substitute those values into the formula.
. With that, we can substitute those values into the formula. 
 
 
Therefore, the slope of the line is 4/3.