Answer:
-3
Step-by-step explanation:
To find the slope of a line given two points, we use:
[tex]\frac{y_2-y_1}{x_2-x_1} \text{ when the points } (x_1,y_1) \text{ and } (x_2,y_2) \text{ are on the line }[/tex].
Or you could line up the points vertically and subtract the points vertically, then put 2nd difference over 1st difference.
That looks like this:
( 2 , -12)
-( -5 , 9 )
----------------
7 -21
So the slope is -21/7 which gives you -3.
