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What am I?

What am I?. Interim. 1. How do you tell if a relation is a function?. 1. Each x has only one y. 2. Find the volume of the sphere . Use 3.14 for pi. V = 4/3 ∏ r³ Round to the nearest tenth. 2. 4186.7. 3. Find the volume of the cylinder . Leave pi in the answer. 3. 525 ∏.

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What am I?

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  1. What am I? Interim

  2. 1. How do you tell if a relation is a function?

  3. 1. Each x has only one y

  4. 2. Find the volume of the sphere. Use 3.14 for pi. V = 4/3 ∏ r³ Round to the nearest tenth.

  5. 2. 4186.7

  6. 3. Find the volume of the cylinder. Leave pi in the answer.

  7. 3. 525∏

  8. 4. Find the volume of the cone. Use 3.14 for pi. • V = 1/3 ∏r² h

  9. 4. 235.5

  10. 5. Find the missing side length of the right triangle. Use Pythagorean Theorem. Round to nearest tenth.

  11. 5. 9.4

  12. 6. Find the distance between the two points. What is the distance formula?

  13. 6. D = = = = 5

  14. 7. • Find the slope between the two points. • (5, -8) (-10,-12)

  15. 7. • 4/15

  16. 8. 8. Find the y-intercept. List it two ways. As y = ___ As an ordered pair (0,?)

  17. 8. y = 4 • Ordered pair (0,4)

  18. 9. A line going up from left to right has a _____________ slope. • Answer: either positive or negative

  19. 9. • positive

  20. 10. List the 3 steps in graphing • Y = 2x + 4

  21. 10. Step 1 – graph the y-intercept • Step 2 – Use the coefficient of x (slope) to plot the next point. • Step 3 – Draw a line through the two points and draw arrows on the end.

  22. 11. If f(x) = 4x – 3, find f(3). • (Hint: Plug in a 3 in the place of the x.)

  23. 11. 4(3) – 3 12 – 3 9 f(3) = 9

  24. 12. How do you check a graph to see if it’s a function?

  25. 12. Use the vertical line test.

  26. 13. What does the graph of a linear function look like?

  27. 13. a line 

  28. 14. What is the converse of the Pythagorean Theorem?

  29. 14. The converse of the Pythagorean theorem is when you are given all three sides. You plug those into the Pythagorean theorem to see if it’s a true statement. If so, it’s a right triangle. If not, it’s not a right triangle. • Is 4, 6, 10 a right triangle? 4² + 6² = 10² 16 + 36 = 100 52 ≠ 100 Not a right triangle

  30. 15. Which relation is a function? • A. {(4,6)(5,7)(4,3) (6,8)} • B. {(2,6)(3,7)(4,8) (5,9)} • C. {(10,4)(5,3)(4,7) (10,-4)} • D. {(1,6)(1,7)(4,3) (5,8)}

  31. 15. B

  32. 16. Practice writing the distance formula one more time.

  33. 16.

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