Scales-graphing Lines, Circles, And Ellipses

15 Questions | Total Attempts: 43

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Scales-graphing Lines, Circles, And Ellipses

This exam contain questions about equations of lines, circles, and ellipses. You will have 120 minutes to complete. SHOW ALL WORK AND BRING TO CLASS TOMORROW (50 POINTS). Write in pencil only. No late work will be excepted, NO EXCEPTIONS!


Questions and Answers
  • 1. 
    Please list any comments or concerns you have about the SCH142 College Agebra class or the Instructor. Constructive criticism is encouraged and accepted. This question will not reflect on your grade.
  • 2. 
    Find the equation of the circle with center (-1, 2) and radius = 2.
    • A. 

      Option 1

    • B. 

      Option 1 and Option 3

    • C. 

      Option 3

    • D. 

      Option 2 and Option 3

    • E. 

      None of the above

  • 3. 
    The equation of a line (below) has a slope (m) of what?     y = -x + 3 (Enter A., B., C., or D.) A.    1 B.   -1 C.   0 D.  -1/2
  • 4. 
    Find the slope of the following equation. 8x + 3y = -9 (Enter A., B., C., or D.) A.   m = 8 B.   m = 8/3 C.   m = -8 D.   m = -8/3
  • 5. 
    Find the slope of the following equation. -2y - 10 + 2x = 0 (Enter A., B., C., or D.) A.   0 B.  -1 C.  -2 D.   1 E.   2
  • 6. 
    Find the equation of the line that (4,2) and (6,7) lies on.
    • A. 

      Y = - 5/2x -12

    • B. 

      Y = 5/2x - 8

    • C. 

      Y - 2 = 5/2x - 10

    • D. 

      2y = 5x - 12

  • 7. 
    Find the equation of the line which passes through the points (- 4,- 8) and (8,1).
    • A. 

      3y=4x-15

    • B. 

      Y=3/4x - 5

    • C. 

      Y = -3/4x - 11

    • D. 

      Y - 8 = 3/4x - 4

  • 8. 
    When graphing an ellipse, identify h, k, a, and b. Then plus into the following equations: (h + k , a)       (h - k, a) (h, k + b)        (h, k - b)
    • A. 

      True

    • B. 

      False

  • 9. 
    Which would NOT be a coordinate on an ellipse with the following equation? Bring the graph to class tomorrow. (x + 2)2 + (y -1)2 = 1
    • A. 

      (-1, 1)

    • B. 

      (-2, 0)

    • C. 

      (-3, 1)

    • D. 

      (-2, 2)

    • E. 

      (-3, -1)

    • F. 

      None

  • 10. 
    Which coordinate would be plotted for an ellipse with the following equation? x2 + y2 = 0
    • A. 

      (0, 0)

    • B. 

      (-1, -1)

    • C. 

      (0, 1)

    • D. 

      (2, -2)

    • E. 

      None

  • 11. 
    What is the center and radius of a circle with the following equation? Bring the graph to class tomorrow. x2 - 6x + y2 + 14y + 33 = 0
    • A. 

      Center (-3, 7) radius = 5

    • B. 

      Center (9, 14) radius = 25

    • C. 

      Center (-3, -7) radius = 25

    • D. 

      Center (3, -7) radius = 5

  • 12. 
    Find the radius of a circle that has the following equation. Bring the graph to class tomorrow. x2 - 4x + y2 - 6y - 23 = 0
    • A. 

      R = 12

    • B. 

      R = 6

    • C. 

      R = 36

    • D. 

      R = 3

  • 13. 
    Find the center of a circle with the following equation. Bring the graph to class tomorrow. x2 + 2x + y2 - 4y + 1 = 0
    • A. 

      Center (-1, 2)

    • B. 

      Center (2, 1)

    • C. 

      Center (1, 2)

    • D. 

      Center (1, -2)

  • 14. 
    The point-slope equation is used to find the equation of a line when slope and y-intercept is needed.
    • A. 

      True

    • B. 

      False

  • 15. 
    On a scales of 1-10, how would you rate your performance in this class? This question will not reflect on your grade.
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