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Alg.2
Name: _________________
7-7 and 7-8 Review
Graph the relation and its inverse.
2. y = x2 + 2
1. y = 2x + 5
Find the inverse of each function. Is the inverse a function?
3. y = 2x  1
4. y = x2 + 3
5. y = 3x2  2
6. y = (x + 4)2  4
For each function f, find f–1. Determine whether f–1 is a function.
7. f(x) =1/6x
8. f(x) = 2x + 2
9. ƒ(x) = x2 + 4
10. f(x) =
x 1
Find the inverse of the relation. Make a Table.
11.
Let f(x) = 2x  5. Find each value.
12. (f1 ◦ f)(1)
13. (f ◦ f1)(3)
Solve each square root equation by graphing.
Round the answer to the nearest hundredth if necessary.
If there is no solution, explain why.
14.
x6 =9
15.
4x  3 = 5
16.
3x  5  1  x
Rewrite each function to make it easy to graph using a translation. Describe the graph.
17. y =
81x  162
18. y =
25x  75  1