Question

Write a function rule for the table

Answer 1

For this case we must construct a function of the form $y = f (x)$ taking as reference the values of the table.

It is observed that if we evaluate the following function we have:

$f (x) = x + 4$

Different signs are subtracted and the sign of the major is placed.

$f (-3) = - 3 + 4 = 1\\f (-2) = - 2 + 4 = 2\\f (-1) = - 1 + 4 = 3\\f (0) = 0 + 4 = 4$

So, the function is:$f (x) = x + 4$

Answer:

$f (x) = x + 4$