Answer:
-10
Explanation:
First, we need to find the slope, defined by m, using the equation

First, we must choose points. I will choose (2, 165) as point 1 and (1, 175) as point two, so:
x1= 1
y1= 165
x2= 2
y2= 175
Now, let's plug it in.

For the next one, we follow the same process.
Point 1: (3, 165)
Point 2: (2, 175)
