| |
| |
1. |
Describe the graph. |
| |
|
 |
| |
|
A. |
neither a relation nor a function |
B. |
relation and function |
| |
|
C. |
not a relation but a function |
D. |
relation but not function |
| |
|
Hint |
|
| |
2. |
Find (x) if f(x) = 3x2 + 1 and g(x) = 2x + 3. |
| |
|
A. |
12x2 - 36x + 28 |
B. |
12x2 + 36x + 28 |
| |
|
C. |
6x2 - 5 |
D. |
6x2 + 5 |
| |
|
Hint |
|
| |
3. |
State the domain of (x) for f(x) = and g(x) =  |
| |
|
A. |
 |
B. |
 |
| |
|
C. |
 |
D. |
 |
| |
|
Hint |
|
| |
4. |
Find the x- and y-intercepts for 3x + 4y - 12 = 0. |
| |
|
A. |
(-4, 0) and (0, -3) |
B. |
(0, 4) and (3, 0) |
| |
|
C. |
(0, 3) and (4, 0) |
D. |
(-3, 0) and (0, -4) |
| |
|
Hint |
|
| |
5. |
The population of Abnerville was 12,500 people in 1950. In 2000, the population was 250,000. Find the average rate of increase in the population over the 50 year period. |
| |
|
A. |
47.5 or about 48 people per year |
B. |
475 people per year |
| |
|
C. |
4750 people per year |
D. |
47,500 people per year |
| |
|
Hint |
|
| |
6. |
Find the zero of the function f(x) = -8x + 4. |
| |
|
A. |
 |
B. |
2 |
| |
|
C. |
-2 |
D. |
 |
| |
|
Hint |
|
| |
7. |
Write an equation in slope-intercept form for the line with a slope of and a y-intercept of -3. |
| |
|
A. |
y = x + 3 |
B. |
y = x + 3 |
| |
|
C. |
y = x - 3 |
D. |
y = x - 3 |
| |
|
Hint |
|
| |
8. |
Write an equation in slope-intercept form for the line with a slope -3 and passes through the point (4, 2). |
| |
|
A. |
y = -3x + 2 |
B. |
y = -3x + 4 |
| |
|
C. |
y = -3x - 8 |
D. |
y = -3x + 14 |
| |
|
Hint |
|
| |
9. |
Determine whether the graphs of the pair of equations 3x - 2y = 7 and 3x + 2y = 7 are parallel, coinciding, or neither. |
| |
|
A. |
neither |
B. |
parallel |
| |
|
C. |
all are correct |
D. |
coinciding |
| |
|
Hint |
|
| |
10. |
What type of relationship or pattern does the scatter plot suggest? |
| |
|
 |
| |
|
A. |
no pattern |
B. |
a linear relationship whose data have a positive relationship |
| |
|
C. |
none of these |
D. |
a linear relationship whose data have a negative relationship |
| |
|
Hint |
|
| |
11. |
Determine two points that appear to represent the data in the scatter plot. Then find and interpret the slope. |
| |
|
 |
| |
|
A. |
Mary improved her free throw performance from year-to-year by an average of about 20% |
B. |
Mary improved her free throw performance from year-to-year by an average of about 25%. |
| |
|
C. |
Mary improved her free throw performance from year-to-year by an average of about 15% |
D. |
Mary improved her free throw performance from year-to-year by an average of about 10%. |
| |
|
Hint |
|
| |
12. |
Which is the graph of the inequality x > -2? |
| |
|
A. |
 |
B. |
 |
| |
|
C. |
 |
D. |
 |
| |
|
Hint |
|
| |
13. |
Which is the graph of the inequality x + 2y - 2 0? |
| |
|
A. |
 |
B. |
 |
| |
|
C. |
 |
D. |
 |
| |
|
Hint |
|
| |
14. |
State the domain and range of the relation. Then state whether the relation is a function.{(2,-1), (-2,4), (2,5), (3,6)} |
| |
|
A. |
Domain {-1,4,5,6}Range {-2,2,3} The relation is not a function. |
| |
|
B. |
Domain {-2,2,3} Range {-1,4,5,6} The relation is a function. |
| |
|
C. |
Domain {-2,2,3} Range {-1,4,5,6}The relation is not a function. |
| |
|
D. |
Domain {-1,4,5,6}Range {-2,2,3}The relation is a function. |
| |
|
Hint |
|
| |
15. |
Find the domain of f(g(x)) given f(x) = , and g(x) = x-1 |
| |
|
A. |
x 1 |
B. |
x 1,-1 |
| |
|
C. |
x 0, 1, -1 |
D. |
all real numbers |
| |
|
Hint |
|
| |
16. |
Write an equation of the line that passes through the points (-2, 4) and (6, -4). |
| |
|
A. |
 |
B. |
 |
| |
|
C. |
 |
D. |
 |
| |
|
Hint |
|
| |
17. |
Write a linear equation to represent the cost y of a long distance calling plan that charges $5.99 plus $0.07 per minute for x number of minutes. |
| |
|
A. |
y = x - 5.99 |
B. |
y = 5.99x + 0.07 |
| |
|
C. |
y = 0.07x + 5.99 |
D. |
y = x + 5.99 |
| |
|
Hint |
|
| |
18. |
Determine two points that appear to represent the data in the scatter plot. Then find and interpret the slope. |
| |
|
 |
| |
|
A. |
Paul's test scores are neither increasing nor decreasing. |
| |
|
B. |
Paul's test scores improve an average of 5 points with each test. |
| |
|
C. |
Paul's test scores improve an average of 15 points with each test. |
| |
|
D. |
Paul's test scores improve an average of 3 points with each test. |
| |
|
Hint |
|
| |
19. |
Which is the graph of the compound inequality 0 x + y 4? |
| |
|
A. |
 |
B. |
 |
| |
|
C. |
 |
D. |
 |
| |
|
Hint |
|
| |
20. |
Which is the graph of the inequality y > |2x + 1| ? |
| |
|
A. |
 |
B. |
 |
| |
|
C. |
 |
D. |
 |
| |
|
Hint |
|
|
|