Explain how to write a function rule from the table below in three sentences. Then write a function rule.

Question

x | 0 2 4 6
y | 2 1 0 -1

Answer 1

To write a function rule from the given table, we need to identify the relationship between the values of x and y. Looking at the table, we can see that y decreases by 1 as x increases by 2. Therefore, the function rule can be written as y = 2 - (x/2).