WKCE Practice

1. Which point is in Quadrant III ? (-4, -5) ( 3, 2) ( 2, -3) (-6, 7) 2. Which equation would you use to model the height of an object that is thrown down with an initial velocity of -10 feet per second from a height of 300ft ? h = -16t ^{2} - 10t - 300h =-16t ^{2} + 300h = -16t ^{2} + 10t - 300h = -16t ^{2} - 10t +3003. The table shows the cost for a certain number of people to get into a haunted house. What is the cost per person? # People 2 6 4 Cost ($) 10 20 30 $5 $4 $3.50 $ .50 4. What is the slope of this line? 5 -5 1/5 -1/5 5. Which point does NOT lie on the graph of x = -6 ( 1, -6) ( -6, 4) (-6, 0) ( -6, -5) 6. What is the solution of the quadratic function whose related function's graph is shown? x = 1, x = 3 x = 4 x = -2 x = 2 7. What is the simplest form of 3√50 ? 15√2 75 5√2 √150 8. At a coffe shop I paid $16.50 for 4 lattes and 2 scones. Another customer paid $15.50 for 3 lattes and 4 scones. Which system of equations can be used to determine cost x of one latte and cost y ofone scone? 4x + 2y = 16.50 3x + 4y = 15.50 y = 4x - 16.50 y = 3x - 15.50 x + y = 16.50 x + y = 15.50 4x + 3y = 16.50 2x + 4y = 15.50 9. Which ordered pair is the solution to the linear system y = ½x - 1 and y = ¾x - 2 ( 1, 4) (4,1) (2,0) (0, -3) 10. What is the volume of the cube? 2x 2x 2x 8x ^{3}2x ^{3}6x ^{3}6x 11. What is the y - intercept of the graph of 3x - 2y = 6 ? (0, -3) (0, 3) (2, 0) (-2, 0) 12. What is the slope of the graph of the equation y = ⅞x -3 3 -3 7/8 -8/7 13. What is the equation of the graph? y = -x -6 y = x + 6 y = -2x + 6 y = 2x - 6 14. Find the area of the triangle. 2 cm 15 cm 30 cm 15 cm 15 cm ^{2}30 cm ^{2}15. The table represents a function that is represented by a rule. What is the missing value in the table? output input 4 9 21 17 15 19 13 6 10 11 23 16. How many zeros are there for the graphed function? 2 1 Infinately many 0 17. The number of student tickets sold for a carnival is 15 less then half the number of adult tickets sold. Which expression represents the number of student tickets sold? 2a + 15 -2a - 15 ½ a - 15 ½ a +15 18. Write the equation -3x + 8y = 8 in slope intercept form. y = 3x + 8 y = -3x - 8 y = ⅜x +1 y = -⅜x +1 19. Which time range has the steepest slope? 11am - 12pm 12pm - 1pm 3pm - 4pm 5pm - 6pm 20. Find the slope of the line passing through the points (-2, 5) and (-5, 11). 2 -½ -2 2 |

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