Unit 3, Lesson 15 (green)
pages 114 - 117
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1. At what y-value does the right-hand curve cross the y-axis?
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2. At what x-value does the left-hand curve cross the x-axis, expressed to the nearest tenth?
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3. Which value of y corresponds to the point where the curve defined by y = 2x² - 5x + 3 crosses the y-axis?
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4. Indicate whether the curve defined by y = -3x² + 12x - 5 goes through a maximum or a minimum and the value of x at which it occurs.
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5. What is the quadratic equation corresponding to the path of the ball?
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6. Which curves correspond to the equations with a < 0?
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7. Which curves correspond to the equations with b = 0?
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8. Which curves correspond to equations with b/2a > 0?
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9. Which curve corresponds to the equation with the most negative value of a?
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16. Which pair of x-values represent where the curve crosses the x-axis?
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17. Which value of y represents where the curve crosses the y-axis?
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18. Which value of x represents where the curve goes through a minimum?
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19. What positive value of x corresponds to a y-value of +3?
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20. How far apart are the two ball players?
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21. When the ball reaches its highest point, how far has it traveled horizontally.
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22. How high off the ground is the ball at its highest point?
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23. How much greater would the total horizontal distance travelled be, assuming its path is still represented by a quadratic function?
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