Pre-Algebra Practice Semester 1 Exam

Transcription

1 Pre-Algebra Practice Semester Exam. Which number is NOT equivalent to 3? Andy and Bob want to remove a 5 foot block wall. They are able to take the wall down at a rate of feet per hour. Which line best represents how fast the wall is coming down? (D) 3.6. Which fraction is equivalent to 0.375? 5 4 A B C D (D) 5 Line A Line B Line C (D) Line D 3. Classify as terminating, repeating, or irrational. Terminating, equal to 0. Repeating, equal to 0. Repeating, equal to 0.00 (D) Irrational 5. For which of the following equations can x equal all real numbers? 7 x 3 x 3 x 7 x x 5 8x 7 x (D) x 3 3 3x GO ON

2 Pre-Algebra Practice Semester Exam 6. Which of the following equations is a line, but not a function? y x y 4x 8 y 5x (D) x 8 7. Which equation has no solution? 4(x 5) = 4x 5 x + 6 3x = x + 6 3(4 + x) = 3x (D) x + = 5x + 8. Which expression is equivalent to (4 3 )? (D) What is the value of 00 0? 0 0 (D) Write the fraction in simplest form. x 3y 4x 4 y 6x 5 y 4 3x 3 3 xy (D) 3y x. Complete the equation so that it has infinitely many solutions (6x ) = (Mx + N) M = 54 and N = 5 M = 54 and N = 3 M = 50 and N = 9 (D) M = 6 and N =. Solve for x.. 05(x + ).5 = 0.3 x = 6 x = 4 x = 6 (D) x = The length of a football field is written as 3 0 units. Which unit best describes this length? inches feet yards (D) miles GO ON

3 Pre-Algebra Practice Semester Exam 4. Which shows how a calculator might display the number ? 38 E E E 4 (D) 3.8 E 0 6. Tommy and Larry began reading the same book at the same time. Each boy reads at different rates. After 3 minutes, Tommy is on page 6. After 6 minutes, Larry is on page 8. Who is reading at a greater rate of change? Tommy s reading rate which is 3 pages/min is how many times as great as 3 0? times 0 times 00 times (D) 000 times Larry s reading rate which is 3 pages/min. Tommy s reading rate which is pages/min. (D) Larry s reading rate which is pages/min. 7. Kate borrows $450 from her mother and agrees to pay her back the same amount each month without interest. After 5 month she still owes her mother $360. Choose the linear function that models the amount Kate owed her mother each month since she borrowed the money. y = x y = 360 8x y = x (D) y = 450 8x GO ON

4 Pre-Algebra Practice Semester Exam Use the given information to answer the following questions 8-0. Function : x 0 3 y Function : y = 3x + 5 Function 3:. The table shows points on a line. x y What are the y-intercept and rate of change of the line? y intercept = 3 Rate of change = y intercept = 4 Rate of change = 4 y intercept = 8 Rate of change = 8 8. What is the y-intercept for Function? (D) 6 9. Which function has a greater rate of change? Function Function Function 3 (D) All are the same 0. Which function is a proportional relationship? Function Function Function 3 (D) None (D) y intercept = Rate of change =. What is form? written in standard ,000 (D) 34,600, What is written in scientific notation? (D) GO ON

5 amount of water amount of water amount of water amount of water Pre-Algebra Practice Semester Exam 4. How can we be sure that the function y 4x 8is linear? 6. Given the graph of the line, what is the correct linear equation? Its y-intercept is times its slope It follows y mx b Its graph is a line (D) Both and 5. Tina fills up the bath tub to take a bath. She takes a nice long hot bath then empties the bathtub. Choose the graph that best represents the amount of water in the tub during this process. time y 4x y 4x y x 4 4 (D) y 4x 4 7. Solve for a. (D) time time (D) 3 4 a 6a a 6 7 a 6 7 a 6 49 a 80 time GO ON

6 Pre-Algebra Practice Semester Exam 8. Classify these numbers by selecting all that apply. 30. Which car is traveling at a faster rate? Car #:, 3, 7 I. Integer II. Irrational III. Rational IV. Real III and IV II and IV IV only (D) II only Car #: Miles Hours Driven Car # 9. Which of the following representations are linear functions? I. II.,7 6, 4 0,3 3,6,5 y x Car # They are the same. 3. Which input/output pairs match the graph below. III. Input Output I only III only II and III (D) I and III {(, 0), (0, 4), (4, 4), (, ), } {(0, ), ( 4, 0), (4, 4), (, ), } {(, 0), (0, 4), (4, 4), (, ), } (D) {(0, ), (4, 0), (4, 4), (, ), } GO ON

7 Pre-Algebra Practice Semester Exam 3. The population of the southwest states, California, Nevada and Arizona are as follows. California 3.8 x 0 7 Nevada.7 x 0 6 Arizona 6.6 x 0 6 What is the total population of the three states that make up the southwest?.3 x x x 0 7 (D) 4.73 x Which of the following tables represent functions? I. Input Output II. Input Output III. Input Output IV. Input Output (D) II only I and II only II and IV only III and IV only GO ON

8 Pre-Algebra Practice Semester Exam 34. Which of the following graphs represent functions? 35. Use the graph: What is the equation of the line in the graph? y x 3 II only I and IV only I, III, and IV only y x 3 3 y 3x (D) y 3x 3 (D) I, II, III and IV GO ON

9 Pre-Algebra Practice Semester Exam 36. Which equation shows a proportional relationship? y x y x (D) y x y x 37. Which boy had the fastest race time? John: 38. For which equation is the set of ordered pairs a solution? {( 4, 3), (, 0), (0, ), (, )} y = x y = 3x + y = x + (D) y = x In the diagram, AB is the hypotenuse of the right triangle ABD and, BC is the hypotenuse of the right triangle BCE. C E B D A Carlos: John Carlos y = 6 x They are the same. x is time in minutes y is miles Which statement(s) are true? I. CE CB = BD DA II. ABD is similar to BCE. III. The slope of CB is less than the slope of BA. I and II only II and III only II only (D) III only GO ON

10 Practice A Pre-Algebra Semester ExamFree Response. The table shows the approximate populations of several countries in 009. Country Population India,05,000,000 Japan 8,000,000 Russia 4.3 x 0 8 China 7. x 0 9 (a) Express the population of India in scientific notation. (b) Express the population of China in standard notation. (c) List the populations of all four countries from least to greatest. Explain how you got your answer GO ON Clark County School District Revised /0/04

11 Practice A Pre-Algebra Semester ExamFree Response. Karen and Shila are driving home from a trip in separate cars. The graph and table below describe each person s trip. Miles left Karen Shila Time(h) Miles left Time(h) (a) Which person s speed is faster? Explain. (b) How many hours does it take Karen to get home? How many hours does it take Shila to get home? Explain GO ON Clark County School District Revised /0/04

12 Practice A Pre-Algebra Semester ExamFree Response 3. The graph shows the number of miles m that Brian is from home, t minutes after starting on a bike ride. (a) How far from home is Brian when he starts his bike ride? How do you know? (b) Find the time interval in which Brian s speed was the fastest. Explain. (c) What was Brian s fastest speed? (d) Describe in your own words the significance of the sign of the slope for the 3 different segments of Brian s ride GO ON Clark County School District Revised /0/04