Library of Functions
You should be familiar with the shapes of these basic functions.
n i L
r a e
u F
s n it o
c n
Equations that can be written f(x) = mx + b slope
y-intercept
The domain of these functions is all real numbers.
f(x) = 3
f(x) = -1
f(x) = 1
Constant Functions f(x) = b, where b is a real number The domain of these functions is all real numbers.
Would constant functions be even or odd or neither?
The range will only be b
If you put any real number in this function, you get the same real number “back”.
f(x) = x
Identity Function f(x) = x, slope 1, y-intercept = 0 The domain of this function is all real numbers.
Would the identity function be even or odd or neither?
The range is also all real numbers
Square Function f(x) = x2 The domain of this function is all real numbers.
Would the square function be even or odd or neither?
The range is all NON-NEGATIVE real numbers
Cube Function f(x) = x3 The domain of this function is all real numbers. The range is all real numbers
Would the cube function be even or odd or neither?
Square Root Function f ( x) = x The domain of this function is NON-NEGATIVE real numbers.
Would the square root function be even or odd or neither?
The range is NON-NEGATIVE real numbers
1 f ( x) = x
Reciprocal Function The domain of this function is all NON-ZERO real numbers.
Would the reciprocal function be even or odd or neither?
The range is all NON-ZERO real numbers.
f ( x) = x
Absolute Value Function The domain of this function is all real numbers.
Would the absolute value function be even or odd or neither?
The range is all NON-NEGATIVE real numbers