Mrs. Carl is teaching her class to add positive and negative integers.  She asks her students to write a rule to generalize what they have learned.  Paulina says that when adding a positive integer and a negative integer, the sum is always positive.  Katrina says this is false but cannot think of a counterexample to make her point.

A.  Which student is correct?  Explain.

B.  Write a rule for adding positive and negative integers.

Mrs. Carl’s Class
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