Algebra I
SOL A.7, A.10
Name:
Block:
Date:
Function Notation Practice
1) Given the function f(x) = 12x + 1.
a) Find f(4).
b) Find f(-3).
2) Evaluate the function f(x) = x2 – 3 when x = -2, 0, and 2.
3) Complete the function table for f(x) = 10 – 2x.
Rule
f(x) = 10 – 2x
x
f(x)
–1
0
2
4) Describe and correct the following error for evaluating the function g(x) = –5x + 3
when x = –3.
g(–3) = (–5)( –3) + 3
–3g = 18
g = –6
x
5) For the function f(x) = 6x + 9, find the value of x so that f(x) = 3.
Find the zero of the following functions.
6) f(x) = –12x – 36
7) g(x) = –x + 5
Function
Notation,
B-W Quiz
Review
Define the following in your own words:
8)
Mean
9)
Median
10) Mode
11) Range
12) Interquartile Range (IQR)
13) Ben surveyed eight friends to determine the number of candy bars they each got trick-or-treating:
{ 42, 33, 38, 16, 27, 42, 52, 58 }
From the data, determine the following:
Lower Extreme: __________
mean: __________
Lower Quartile: __________
mode: __________
Median: __________
range: __________
Upper Quartile: __________
IQR: __________
Upper Extreme:__________
Create a box and whisker plot for this data on the number line below.
Number the number line evenly and label the data points on the box-and-whisker plot with their
names.
14) A statistician is collecting data on heights of basketball players over the years. This box-and-whisker plot
shows the results.
What percent of the basketball players are 76 in tall or shorter?
15) The quiz scores for two different classes are summarized below.
In Mr. Bradley’s class, 18 students each received a different quiz score.
In Mrs. Gem’s class, 13 students each received a different quiz score.
What is the total number of students who scored a 30 or below?
16) Plot the zeros of the function on the graph below:
17) Find the zero for the following function: g ( x)  3x  9
18) Find the x-intercept for the function f ( x)  8x  32 Write your answer as an ordered pair.
19) Given f(x) = 3x2 – 5, find f(-2). Write your answer in function notation.
20) Evaluate the function g(x) = 7x – 5 when x = -3. Write your answer in function notation.
21) Given h(x) = 25x – 3, find the value of x if h(x) = 2. Write your answer in function notation.
22) Given the function p( x)  10 x 17, find the value of x if p(x) = 173. Write your answer in function
notation.