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Graphing Exponential Functions - Quiz 1   Last unanswered question  Question  Next unanswered question

Question 1 lion

Which of the following graphs represents y = ex?
a) y = f(x)
PIC		   b) y = f(x)
PIC
c) y = f(x)
PIC		   d) y = f(x)
PIC

 

Not correct. Choice (a) is false.
Try again, this is y = e-x .
Not correct. Choice (b) is false.
Try again, this is y = - ex .
Your answer is correct.
This is y = ex .
Not correct. Choice (d) is false.
Try again, this is y = - e- x.
Question 2 lion

Which of the following graphs represents y = 2e-x?
a) y = f(x)
PIC		   b) y = f(x)
PIC
c) y = f (x)
PIC		   d) y = f(x)
PIC

 

Not correct. Choice (a) is false.
Try again, this is x y = - 2e .
Not correct. Choice (b) is false.
Try again, this is - x y = - 2e .
Not correct. Choice (c) is false.
Try again, this is x y = 2e .
Your answer is correct.
This is -x y = 2e .
Question 3 lion

Which of the following graphs represents x y = e + 2 ?
a) y = f(x)
PIC		   b) y = f(x)
PIC
c) y = f(x)
PIC		   d) y = f(x)
PIC

 

Not correct. Choice (a) is false.
Try again, this is y = ex+1, the graph y = ex has been moved 1 unit left.
Not correct. Choice (b) is false.
Try again, this is y = ex-2, the graph y = ex has been moved 2 units right.
Not correct. Choice (c) is false.
Try again, this is y = ex- 2, the graph y = ex has been moved two units down.
Your answer is correct.
The graph y = ex has been moved two units up to give y = ex + 2.
Question 4 lion

Consider the functions graphed below.
PIC
Which of the following functions is the most likely function to represent f(x)?
a) x f(x) = 1.5 .   b) x f(x) = 3 .
c) x f(x) = 2e .   d) x f(x) = 6 .

 

Not correct. Choice (a) is false.
Try again, f (x) is between x y = 2 and x y = 5 .
Your answer is correct.
f(x) is between x y = 2 and x y = 5 .
Not correct. Choice (c) is false.
Try again, f(x) does not go through (0,2).
Not correct. Choice (d) is false.
Try again, f (x) is between x y = 2 and x y = 5 .
Question 5 lion

Which of the following graphs represents y = e-x2 ?
a) y = f(x)
PIC		   b) y = f(x)
PIC
c) y = f(x)
PIC		   d) y = f(x)
PIC

 

Your answer is correct.
The function has a maximum value of 1 and must be symmetrical about the y -axis so this is the only possible correct answer.
Not correct. Choice (b) is false.
Try again, this is x2 y = 12- e .
Not correct. Choice (c) is false.
Try again, this is x2 y = e .
Not correct. Choice (d) is false.
Try again, this is y = e-x.