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Identify Linear_ Quadratic_ and Exponential Functions

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Identify Linear_ Quadratic_ and Exponential Functions Powered By Docstoc
					Identify Linear, Quadratic, and
         Exponential Functions
           N 0806.3.10       Distinguish quadratic and exponential
     functions as nonlinear using a graph and/or a table of values.

           N 0806.3.11         Distinguish between the equations of
         linear, quadratic, and exponential functions (e.g. function
                             families such as y=x2, y=2x, and y=2x).
Linear Functions               Y


Is this function linear?
y=x+2
   X                Y
                Y = (-2) + 2
   -2             Y=0              X
                Y = (-1) + 2
   -1             Y =1
                Y = (0) + 2
    0             Y=2
                Y = (1) + 2
    1             Y=3
                Y = (2) + 2
    2             Y=4
Quadratic Functions          Y


y = x2 + 1

    X             Y
             Y = (-2)2 + 1
    -2          Y=5
             Y = (-1)2 + 1       X
    -1          Y=2
             Y = (0)2 + 1
    0           Y=1
             Y = (1)2 + 1
    1           Y=2
             Y = (2)2 + 1
    2           Y=5
Exponential Functions
                        Y

y = 2x

    X        Y
           Y = 2(-2)
    -2   Y = ¼ or .25
                            X
           Y=  2(-1)
    -1   Y = ½ or .5
           Y = 2(0)
    0       Y=1
           Y = 2(1)
    1       Y=2
           Y = 2(2)
    2       Y=4

				
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posted:9/12/2011
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