**Weegy:** The answer is zero. The property is identity property of addition. This property states that any number plus 0 equals that number.
[smile]

**User:**
What is the slope of the line that contains the points (0, –8) and (4, 1)?
A.
B.
C. 4
D.

**Weegy:** The answer is zero. The property is identity property of addition. This property states that any number plus 0 equals that number.
[smile]

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