The answer would ne answer choice b. I don't know what the last answer choice was though.
The slope of line that passes through given points is -1/2
Step-by-step explanation:
The formula for slope is:

Given points are:
(-2,-1) = (x1,y1)
(2,-3) = (x2,y2)
Putting the values in the formula of slope
m = 
The slope of line that passes through given points is -1/2
Keywords: Slope, rate of change
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The rate of change is the same as the slope.
Let's find the slope of function 1 using the Rise Over Run rule.
The rise is 2 and run is 1. So your rate of change is 2/1 or 2 for function 1
Function 2 is a y = mx + b equation, the slope is usually "m" or before the x
y = 1/2x + 7
1/2 is your rate of change for function 2