1.Which of the following relations are functions? (2 points) y = x + 2x = y + 2x + y = 2 Cho

  

1.Which of the following relations are functions? (2 points)
y = x + 2x = y + 2x + y = 2

Choice I only

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Choice II only

Choice III only

All of them

2.
Find the range for f(x) = x2 + 1, for x < 0. (2 points) y ≥ 1 y > 1
y < 1 y ≤ 1 3. Find the domain for . (2 points) x ≠ 2 x ≠ -3 x ≠ -3, 2 All real numbers 4. Find the range of the function: f(x) = x + 3, for x ≠ 1. (2 points) All real numbers y ≠ 4 y ≠ 3 y ≠ 1 5. Determine whether f(x) = -5x2 + 3x + 4 has a maximum or minimum. (2 points) Maximum Minimum 6. Where is the function 4(x + 2)(x - 3)3 > 0? (2 points)
When x < -2 or x > 3
When x > -2 or x < 3 For no x values For all x values 7. For which x value would the graph of y = x2 – 25 be below the x-axis? (2 points)
7
6
5
4
8.
Find f(g(5)) if and g(x) = (x – 1)2. (2 points)

24
9.
Find f[g(x)] if f(x) = x2 + 1 and g(x) = x5. (2 points)
(x5 + 1)2
(x2 + 1)5
x10 + 1
None of these
10.
Find g(x) if g(x) is the resulting function from moving f(x) = (x + 1) right 2 units and up 5 units. (2 points)
g(x) = (x + 6) + 2
g(x) = (x – 1) + 2
g(x) = (x + 3) + 5
g(x) = (x – 1) + 5
11.
Rewrite f(x) = sin(x) if the function is stretched vertically by a factor of 5. (2 points)
sin(5x)
5sin(x)

12.
What is the domain of ? (2 points)
All real numbers less than 3
All real numbers except 3
All real numbers greater than 1
All real numbers greater than 3
All real numbers
13.
Find the range of . (2 points)
y ≥ 0
y > 3
y ≥ 3
All real numbers
14.
Is the function of f(x) = |-4x| + x4 even, odd, or neither? (2 points)
Odd
Even
Neither
15.
Find the period and amplitude for f(x) = 2sin(3x). (2 points)
Amplitude = 2, Period =
Amplitude = 3, Period = π
Amplitude = , Period = 2π
Amplitude = 2, Period =

  
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