Answer: choice C) 3
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Step-by-step explanation:
Using any two points, we can find the slope through the slope formula. In this case, I'm using the first two points (from the first two rows)
m = (y2 - y1)/(x2 - x1)
m = (1-(-2))/(-1-(-2))
m = (1+2)/(-1+2)
m = 3/1
m = 3
The slope is 3 meaning that each time x increases by 1, y increases by 3.