Question

Which is the function represented by the table?

A 2-column table with 4 rows. Column 1 is labeled x with entries negative 1, 0, 1, 2. Column 2 is labeled f (x) with entries 4, 5, 6, 7.
f (x) = x + 5
f (x) = x minus 5
f (x) = x + 1
f (x) = x minus 1

Answer 1

f(x) = x + 5

Reason: each output equals the input plus 5 (−1+5=4, 0+5=5, 1+5=6, 2+5=7).