Alg.1MidTermReview Multiple Choice Identify the choice that best completes the statement or answers the question. ____ ____ ____ 1. Evaluate u + xy, for u = 10, x = 8, and y = 4. a. 84 b. 42 c. 72 d. 22 2. –9z – 23z a. 14 c. –32z d. 14z b. 32z 3. Which set of numbers is the most reasonable to describe the number of desks in a classroom? a. whole numbers c. rational numbers b. irrational numbers d. integers Write a function rule for each table. ____ 4. Days 1 2 3 4 Cost to Rent a Truck 38 60 82 104 a. c = 22d + 16 b. c = 16d + 22 ____ c. c = 22d + 22 d. c = 22d 5. A 16-oz bottle of water costs $1.12. What is the cost per ounce? a. $2.29/oz b. $0.07/oz c. $0.70/oz d. $0.23/oz Simplify the expression. ____ ____ ____ 6. a. 36 b. 23 c. 28 d. 15 a. 12 b. –11 c. –12 d. 11 8. Evaluate x(–y + z) for x = –4, y = 7, and z = –3. a. –31 b. 25 c. –16 d. 40 7. Solve the equation. ____ 9. 18 = –d + 9 a. –12 ____ 10. 6x + 8 = 5x + 2 a. –1 b. 9 c. 3 d. –9 b. –6 c. –9 d. –4 ____ 11. a. –80 b. 16 c. –16 d. 1.8 ____ 12. 40 – 18 + 8m = 102 a. –10 b. 10 c. 8 d. 13 ____ 13. 5(y + 7) = 75 a. 8 b. 22 c. 9 d. –22 b. 0 c. –9 d. –10 c. d. 4 ____ 14. a. 3 ____ 15. 6d + 2d – 6d + 9 = 2d a. 0 b. 9 4 3 4 Find the slope and y-intercept of the line. ____ 16. 1 y= x–3 6 a. 1 ; –3 6 b. –3; c. 6; 3 1 6 d. 3; 1 6 The pair of figures is similar. Find x. Round to the nearest tenth if necessary. ____ 17. 15 ft x 7 ft 2 ft Drawing not to scale a. 0.9 ft b. 4.3 ft c. 0.1 ft d. 3.5 ft ____ 18. What equation models the data in the table if d = number of days and c = cost? Days 2 3 5 6 Cost 10 15 25 30 ____ 19. Find the measure of . (Hint: The sum of the measures of the angles in a triangle is .) x° 68° 26° a. b. c. d. 8 ____ 20. A map has a scale of 1 cm : 21.5 km. Two cities are 6.7 cm apart on the map. To the nearest tenth of a kilometer, what is the actual distance corresponding to the map distance? a. 144.1 km b. 251.6 km c. 165.6 km d. 150.8 km ____ 21. Simplify a. . b. 9 7 c. 49 9 ____ 22. Is rational or irrational? a. rational 9 49 d. 81 7 d. b. irrational Find the slope of the line. ____ 23. y 5 4 3 2 1 –5 –4 –3 –2 –1 –1 1 2 3 4 5 x –2 –3 –4 –5 a. 2 b. 1 2 c. 2 1 2 ____ 24. The formula gives the velocity v in feet per second of an object that has fallen h feet. Find the velocity of an object that has fallen 83 feet. Round to the nearest hundredth. a. 72.88 ft/sec b. 5312 ft/sec c. 12.88 ft/sec d. 51.54 ft/sec Find the x- and y-intercept of the line. ____ 25. 7x – 2y = 56 a. x-intercept is 7; y-intercept is –2. b. x-intercept is –2; y-intercept is 7. c. x-intercept is –28; y-intercept is 8. d. x-intercept is 8; y-intercept is –28. Graph the inequality. ____ 26. x 4 a. –5 –4 –3 –2 –1 0 1 2 3 4 5 –5 –4 –3 –2 –1 0 1 2 3 4 5 –5 –4 –3 –2 –1 0 1 2 3 4 5 –5 –4 –3 –2 –1 0 1 2 3 4 5 b. c. d. Find the slope of the line that passes through the pair of points. ____ 27. (4, 6), (8, 3) a. 3 4 b. 4 3 c. c. m d. 3 4 4 3 Write an inequality for the graph. ____ 28. –5 a. –4 m –3 –2 –1 0 1 2 b. 1 2 3 4 m 5 1 2 1 2 Write the slope-intercept form of the equation for the line. ____ 29. y 5 4 3 2 1 –5 –4 –3 –2 –1 –1 1 2 3 4 5 x –2 –3 –4 –5 a. 4 y= x1 3 b. 3 y= x1 4 c. 4 y= x1 3 d. 3 y= x1 4 d. m> 1 2 State whether the slope is 0 or undefined. y ____ 30. 5 4 3 2 1 –5 –4 –3 –2 –1 –1 1 2 3 4 5 x –2 –3 –4 –5 a. undefined b. 0 Solve the inequality. ____ 31. a. b. c. d. a. 60 b. 1.7 c. 96 d. 9.6 a. b. 70 c. 62 d. 66 Solve the proportion. ____ 32. ____ 33. 26 5 Are the graphs of the lines in the pair parallel? Explain. ____ 34. y = 2x + 8 4x – y = –4 a. Yes, since the slopes are the same and the y-intercepts are different. b. Yes, since the slopes are the same and the y-intercepts are the same. c. No, since the slopes are different. d. No, since the y-intercepts are different. Write a compound inequality that the graph could represent. ____ 35. –5 a. b. –4 –3 –2 –1 0 1 2 3 4 5 c. d. Solve the inequality. Then graph your solution. ____ 36. s – 4 > –2 a. s > –2 –16 c. s >–6 –12 –8 –4 0 4 8 12 –12 –8 –4 0 4 8 12 –8 –4 0 4 8 12 16 –12 –8 –4 0 4 8 12 16 –12 –8 –4 0 4 8 12 16 –6 –4 –2 0 2 4 6 8 c. k < –2 –12 –8 –4 0 4 8 12 –16 16 b. k < 2 –8 –16 16 ____ 37. –2k < –4 a. k > –2 –16 –12 d. s < –2 b. s > 2 –16 –16 16 d. k > 2 –6 –4 –2 0 2 4 6 –8 8 Determine whether the given lengths can be sides of a right triangle. ____ 38. 18 m, 24 m, 30 m a. no b. yes Write an equation for the line that is parallel to the given line and that passes through the given point. ____ 39. y = –5x + 3; (–6, 3) a. y = –5x + 27 b. y = –5x – 27 c. y = 5x – 9 d. y = –5x + 9 Simplify the radical expression. ____ 40. a. b. c. d. a. 6 b. c. 3 d. 6 2 ____ 41. Find the length of the missing side. If necessary, round to the nearest tenth. ____ 42. 34 31 b a. 46 b. 32.5 c. 14 d. 65 Write the equation of a line that is perpendicular to the given line and that passes through the given point. ____ 43. ; (–6, 5) a. c. b. d. Tell whether the lines for each pair of equations are parallel, perpendicular, or neither. 1 ____ 44. y = x + 6 3 12x + 4y = –4 a. parallel b. perpendicular c. neither Write an equation of a line with the given slope and y-intercept. ____ 45. m = –5, b = 6 a. y = –5x – 6 b. y = 6x – 5 c. y = 5x + 6 d. y = –5x + 6 ____ 46. A car is driving at a speed of 70 mi/h. What is the speed of the car in feet per minute? a. 369,600 ft/min c. 4,200 ft/min b. 3,010 ft/min d. 6,160 ft/min ____ 47. A line passes through (1, –5) and (–3, 7). a. Write an equation for the line in point-slope form. b. Rewrite the equation in slope-intercept form. a. y – 5 = 3(x + 1); y = 3x + 8 c. d. y + 5 = –3(x – 1); y = –3x – 2 b. ____ 48. Find the value of y. a. 18 b. 1.8 c. –9 d. 9 ____ 49. Find the unit rate for number of parts manufactured per hour if 1744 parts are made in 3 hours. Round to the nearest integer. a. 555 parts/h b. 598 parts/h c. 632 parts/h d. 581 parts/h ____ 50. Write the conversion factor for seconds to minutes. Use the factor to convert 135 seconds to minutes. a. c. ; 3.5 min ; 2.25 min b. ; 1.5 min d. ; 2 min