1.   What are the real roots of the quadratic equation whose related function is graphed below?
   
    A. 3, -1 B. 3
    C. -1, -3 D. -3, 1
    Hint

  2.   Solve a2 + 16 = 0 by graphing.
    A. -4 B. -4, 4
    C. D. 4
    Hint

  3.   The equation x2 + 1 = -3x does not have integral roots. State the consecutive integers between which the roots lie.
    A. between -3 and -2 and between 0 and 1
    B. between 0 and 1 and between 2 and 3
    C. between -1 and 0 and between 0 and 1
    D. between -3 and -2 and between -1 and 0
    Hint

  4.   A quadratic function has a maximum point at (1, 4). The roots of the related quadratic equation are -1 and 3. Which is the graph of the function?
    A. B.
    C. D.
    Hint

  5.   In baseball, a pop fly should be easily caught if it stays in the air for 7 seconds. Suppose a ball that is hit can be represented by the function y = –16t2 + 125t + 5, where y is the height after t seconds. Will the ball be considered an easy catch?
    A. yes, because t < 7 B. no, because t < 7
    C. no, because t > 7 D. yes, because t > 7
    Hint



Glencoe
The McGraw-Hill Companies