REVIEW FOR FALL FINAL –It’s to your benefit to complete this review for your final. 1. What is the slope of the line? (Find two good points and use rise/run) 2. What is the y-intercept of the line graphed in # 1? 3. Find the slope of the line through the points (-3, 5) and (-1, 2) m= y2 - y1 x2 - x1 4. What kind of slope does the line represent? 5. Write the equation of the line in slope-intercept that passes through the point (-3, 2) and has a slope of 1? 6. Write the equation of a line in slope intercept form that passes through the points (-1, 4) and (3, 6). 7. SOLVE: 3(x + 2) = 2(2x – 1) – 12 8. A survey showed that 2 out of every 5 voters would vote in an election. Based on this survey, how many people would vote in a city with 20,000 voters? (set up proportion) 9. 10. 11. Write the equation that contains these sets of x and y values (use the STAT function in calculator to find equation) 12. Find the slope of the line whose equation is 2x + y = 5 (Convert to y = mx + b , first) 13. Change the equation 5x – 2y = 8 to slope intercept form 14. Find the y-intercept of the line whose equation is -2x + 2y = 4 15. What type of lines would make up a system with no solution? 16. What is the value for x in the following system of equations: x – y = 6 2x + y = 0 17. Find the solution to the system (use any method you want) y + 2x = 4 3y – 2x = -12 18. Find the equation of the line (you need to find y-intercept and slope) 19. Solve by elimination. 5x – 9y = -3 4x – 3y = 6 20. Solve and graph the inequality y > -3x + 1 solution______________ (Don’t forget to shade the TRUE part) b b2 4ac 21. Find the solution(s) of the quadratic using the Quadratic Formula x 2a 6x2 – 5x – 2 = 0 22. Describe the change in the graph y = -5x when the equation is changed to y = -5x – 4. 23. Which point is in the solution area of this system of inequalities? y < 2x + 3 y < -x + 1 A. B. C. D. (1, 2) (-1, 4) (2, 1) (1, -2) 24. Factor the quadratic ( ) ( ) x2 - 12x + 35 25. FOIL the two binomials (Make sure you combine like terms) ( x + 1) (x – 4) Describe the change in y = x2 for each equation (e.g. up, down, left, right, flipped, got wider or narrawer). Type them in the calculator using the y = 26. y 1 2 x 3 27. y 5x 30. y ( x 1) 8 2 2 2 31. y ( x 3) 5 28. y x 2 9 32. y ( x 6) 2 2 29. y x 5 2 33. FOIL (x – 6)(x + 6) 34. What are the solutions of the quadratic function? (the solutions are where the graph crosses the X – AXIS) 35. A cannonball is shot into the air with a velocity of 60 ft/sec. At what time will the cannonball first reach a height of 36 feet, using the equation below? (Type the equation in the y =. After that go to the table, and find where y = 36…look to corresponding x value) h = -16t2 + 60t A. B. C. D. .75 sec. 2 sec. 3 sec. 4 sec. 36. What is the slope of a line that is parallel to 6x + 3y = -12 (Slopes of parallel lines are the SAME) 37. What is the slope of a line that is perpendicular to 6x + 3y = -12 (Slopes of perpendicular lines are FLIP the fraction and change the sign) 38. Netpix charges $1 per movie plus a $20 sign up fee. L.A. Videos charges $3 per movie but no enrollment fees. Write a system of equations that could be used to find the number of movies a person could rent and be charged the same from either company. 39. A carpenter recorded the amount of money he earned for different jobs and the amount of time he spent on each job. The data are shown in the scatterplot below: Based on the data, which best represents the amount of money the carpenter would earn from a job that took 5 days to complete? A $2500 B $500 40. Solve this system by graphing. C $1250 D $200 3x 2 y 2 2 x y 6 41.Tell whether the ordered pair (2, -2) is a solution of the system 3x 4 y 14 2 x 5 y 12 42.The system of inequalities below was graphed in the window shown. Are the following points solutions to the system? A. B. C. D. (4, 10) (-3, 12) (9, 5) (-4, 5)
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