(MATH 114N Week 7 Homework Section 17.5)
1. Question: Find the following values for the function defined by
f(x) = x + 5.
2. Question: Find the following values for the function defined by
f(x) = x + 4.
3. Question: Find the following values for the function defined by
f(x) = x + 3
4. Question: Find the domain and the range of the relation and determine whether it is a function.
{(8,3),(- 9, – 5),(2, -1),(4, – 9)}
5. Question: Find the domain and the range of the relation, and tell whether the relation is a function.
6. Question: Determine whether the graph to the right is a function.
Using the vertical line test, is this the graph of a function?
7. Question: Decide whether y is a function of x.
y = – 3x – 1
8. Question: Decide whether the following equation defines y as a function of x.
y = 9
9. Question: Determine whether the relation is a function. Explain.
x = 5
10. Question: Determine whether the relation is a function. Explain.
x = 9
11. Question: Given the function f(x) = x2 – x + 3 find each of the following.
f(6), f( – 10), f(0)
12. Question: Given the function f(x) = |x + 1| find each of the following.
f(4), f( – 4), f(0)
13. Question: Write the information on the chart as a set of ordered pairs and determine if the set defines a function.
14. Question: Suppose that g is the name given to the function represented by the graph and that g (2007) = 36.0(million). What does this tell you in the context of the application?
