Х -7, -3, -5, 3, 9, 16, 20 y=f(x) 3, 4, 5, 1, 8, 7, 11
The table shown at the right gives y as a function of x, that is, y = f(x). Use the table to answer parts a through d below.
a. Is - 7 an input or an output of this function?
b. Is f(-7) an input or an output of this function?
c. State the domain and range of this function.
d. Explain why this relationship describes y as a function of x.