Michigan State University - Diagnostic Exam

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3.2

  •   Which of the following best describes the graph of the function ( )x y= 1- 2 ?
    1. x-intercept 0; y-intercept 1; as x gets larger, y gets larger
    2. y-intercept 1; as x gets larger, y approaches 0
    3. y-intercept 2; as x gets larger, y approaches 1
    4. y ≥ 0; as x gets smaller, y gets smaller
    5. the graph does not exist for very small values of x; as x gets larger, y approaches 0

Solution:
“y-intercept 1; as x gets larger, y approaches 0” is the only description that is consistent with the sketch of the graph of ( )x y = 1- 2 (shown below).

PIC

Diagnostic:

If you miss this question please review exponential functions.

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July 15, 2008