Answer:
5
Explanation:
5 is your answer because if you plot these on a graph you would know how many points there are in between them and there are 5
i hope this helps :)
Slope = (y2 - y1) / (x2 - x1)
Slope = (28 - 18) / (4 - 2)
Slope = 10 / 2 = 5
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