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Graphs of Constant, Linear, and Quadratic Functions

Answers to pre-test

1.          

    Function has no zero or x-intercept.
    Graph is a horizontal line.

2.            

    Function has infinitely many zeros and x-intercepts.
    Graph is a horizontal line.

3.         

    Zero of the function is x = 0,  x-intercept is (0 , 0)
    Graph is a straight line.

4.          

   Zero of the function is x = ,   x-intercept is (   ,  0)
   Graph is a straight line.

5.              

     Zero of the function is x = 4,  x-intercept is (4 , 0)
     Graph is a straight line.

6.  

    Zeros of the function are  x = - 2 and x = 4
    x-intercepts are ( - 2 , 0)  and ( 4 , 0)
   Graph is a curve known as a parabola.

7.               

    Zeros of the function are  x = - 2 and x = 4
    x-intercepts are ( - 2 , 0)  and ( 4 , 0)
   Graph is a curve known as a parabola.

8.            

    Zeros of the function are  x = - 2 and x = 4
    x-intercepts are ( - 2 , 0)  and ( 4 , 0)
   Graph is a curve known as a parabola.

9.              

    Zeros of the function are  x = - 2 and x = 4
    x-intercepts are ( - 2 , 0)  and ( 4 , 0)
   Graph is a curve known as a parabola.

10.                  

     Zeros of the function are x = - 1 and x = 3
     x-intercepts are ( - 1 ,  0)  and  (3 , 0)
     Graph is a curve known as a parabola.

11.            

      Zeros of the function are x = - 3 and x = -
      x-intercepts are ( - 3 , 0) and (  - , 0 )
      Graph is a curve known as a parabola.

12.                 

      Zeros of the function are x = - 1 and x =
      x-intercepts are ( - 0 , 0) and (    ,  0 )
      Graph is a curve known as a parabola.