1.   y = 2x is a(n)_____.
    A. polynomial function B. power function
    C. linear function D. exponential function
    Hint

  2.   For the graph of y = bx, the domain is _____.
    A. all real numbers > 0 B. all real numbers
    C. all real numbers D. all real numbers
    Hint

  3.   The y-intercept for the exponential function y = bx is _____.
    A. (0, -1) B. (0, 2)
    C. (0, 1) D. (0, 0)
    Hint

  4.   Graph y < 3x + 2.
    A. B.
    C. D.
    Hint

  5.   Which inequality represents the graph shown?
   
    A. y < 3-x B. y > 3-x
    C. y < -3x D. y > -3x
    Hint