Lesson
Functions and Their Graphs
Determine whether the relation represents a function. If it is a function, state the domain and ran
g
e.
1) {(29, -2), (4, -1), (4, 0), (5, 1), (13, 3)}
Determine whether the followin
g
equations define
y
as a function of x:
2) y = |x|
3) x = y2
Find the value for the functions:
4) Find f(2) when f(x) = x2 - 8
x + 3 .
Find the value for the function.
5) Find f(-9) when f(x) = |x|- 6.
6) Find f(x - 1) when f(x) = 5x2 - 5x - 4.
Solve the problems:
7) If f(x) = 5x3 + 2x2 - x + C and f(-3) = 1, what is the value of C?
8) If f(x) = x - 3A
-3x + 5 and f(-3) = 9, what is the value of A?
9) The function F described by F(C) = 9
5C + 32 gives the Fahrenheit temperature corresponding to the
Celsius temperature C. Find the Fahrenheit temperature equivalent to 10°C.
Find the domain of the functions:
10) f(x) = x
x2 + 12
11) g(x) = 3x
x2 - 64
12) f(x) = 10 - x
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