(Grade 11) Section 3.4 - Solving Quadratic Equations (Part I)

5 Questions | Total Attempts: 101

SettingsSettingsSettings
Please wait...
(Grade 11) Section 3.4 - Solving Quadratic Equations (Part I)

Complete the following questions


Questions and Answers
  • 1. 
    What is not another name for the root of an equation?
    • A. 

      Zeros

    • B. 

      X–intercepts

    • C. 

      Vertex

    • D. 

      Solutions

  • 2. 
    Determine the solutions of the quadratic equation x2 + 4x + 1 = –2
    • A. 

      X = 1, x = 4

    • B. 

      X = 3, x = –2

    • C. 

      X = 2, x = –2

    • D. 

      X = –3, x = –1

  • 3. 
    Which is the corresponding quadratic equation whose solutions are also the zeros of the function graphed below?
    • A. 

      X^2 – x + 6 = 0

    • B. 

      –x^2 – x + 6 = 0

    • C. 

      X^2 + x + 6 = 0

    • D. 

      X^2 + x – 6 = 0

  • 4. 
    The surface area of a right circular cone with a slant height if 5cm can be modelled by the function SA(r)= πr2 + 5πr, where SA(r) is the surface area in cm2 and r is the radius in cm.  What is the root of the function?
    • A. 

      0

    • B. 

      1

    • C. 

      π

    • D. 

      5

  • 5. 
    What are the solutions to the equation f(x) = x2 – 25 (hint: think difference of squares)
    • A. 

      X = 5

    • B. 

      X = –5, x = 0

    • C. 

      X = 5, x = –5

    • D. 

      X = –5