D. 2
Slope formula: y2-y1/x2-x1
(2,2) & (6,10) -->
x1= 2
x2= 6
y1= 2
y2= 10
Plug in the numbers into the formula.
10-2/6-2
Simplify.
10-2/6-2 --> 8/4 --> 2/1 --> 2
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