EOC Review- Graphing Exponential Functions

In order to be a function the following must be true.

• each x value has only one y value
• each y value has only one x value
• each x  has only one y & each y has only one x 
• each x and y are equal

Which set of ordered pairs is a function?

• (9,5) (10,5) (9,-5) (10,-5)
• (3,4) (4,-3) (7,4) (3, 8)
• (6,-5) (7, -3) (8, -1) (9, 1)
• (2, -2) (5, 9) (5, -7) (1, 4)

Which set of coordinates is NOT a function?

• (5,10) (2, -3) (8,12) (-4, 2)
• (5, 10) (2, 10) (3, 10) (-4, 10)
• (5, 10) (2, -3) (8, 12) (2, -4)
• (10, 5), (-3, 2) (12, 8) (2, -4)

Which of the following is a function?

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• 
• 

Is the following a function?

• Yes, this is a function.

• No, it's not a function.

• Can't be determined with this information.

Which graph represents a function?

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• 
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Which image is NOT the graph of a function?

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What is the y-intercept of the function?

• 2
• 3
• 1
• -2

Which of the following statement about the graph of y=6(.5)^x is TRUE?

• The equation of the asymptote is x=0.

• The y-intercept is at 6

• The graph is increasing

• The graph will never cross the y axis

Which of the following statements is true about the graph of the equation above?

• The equation of the asymptote is y=0.

• The range is all real numbers less than 0.

• The coordinates of the x-intercept are (0,.25)

• The graph has a vertical asymptote.