Relations, mappings and functions

Question 1 of 10

Given f(x) = 2x + 1, find f(8).

Question 2 of 10

If h(x) = 3x² + 6, then h(5) = ___.

Question 3 of 10

If f(x) = x² − 1, then f(−3) equals

Question 4 of 10

If h(x) = 4x² + 1, then h(5) = ___.

Question 5 of 10

If h(x) = 2x² + 4, then h(5) = ___.

Question 6 of 10

A mapping sends 2 → 8, 3 → 11, 4 → 14. Find the rule.

Question 7 of 10

The domain is the set of outputs.

Question 8 of 10

The function f is defined by f(x) = 2x − 1 on the domain {−2, −1, 0, 1, 2, 3}. (a) Find the range. (b) Draw an arrow diagram for the mapping. (c) Find x when f(x) = 9.

Question 9 of 10

If f(x) = 3x − 2, then f(2) = 4.

Question 10 of 10

The function f is defined by f(x) = 2x − 1 on the domain {−2, −1, 0, 1, 2, 3}. (a) Find the range. (b) Draw an arrow diagram for the mapping. (c) Find x when f(x) = 5.