Consider the following table.

1. What is the rule for the table?

   Hint (a):

   Look at the first pair of numbers. What change do you notice from the $x$ to the $y$-value? Now look at the rest of the pairs of numbers. Do they follow the same pattern of change?

   Answer (a):

   $y = x + 2$
   Can you see why?

2. Explain your strategy for finding the rule for this table.

   Hint (b):

   How did you find the rule for this table? Answers vary.
   Did you compare two pairs of numbers and see if they both changed in the same way?