Part A) Yes, the data in the table represents a function because each x-value has exactly one y-value. Also, the function passes the vertical line test.
Part B) f(x) = 5x - 21 f(11) = 5(11) - 21 f(11) = 55 - 21 f(11) = 34
The table has a y-value of 8, when x = 11.
Therefore, f(x) = 5x - 21 has a greater value than the table when x = 11