Quiz 1 Oct. 4, 2006

Calculus I Name:

Ver 1 Student ID:

Quiz 1

Oct. 4, 2006

1. Which of the following pairs of functions are inverse functions of each other on the implied domains?

A) f (x) =|x|, g(x) = |x| B) f (x) = _x¹, g(x) = ^x₁, C) f (x) = ¹_x, g(x) = ¹_x, D) f (x) =√

x, g(x) = x². Ans: C

2. Which of the following curves is NOT the graph of a function?

(A) (B) (C) (D)

A) graph A, B) graph B, C) graph C D) graph D

Abs: C

3. Which one of the lines below is parallel(平行) to the line y − 4 = 2(x − 7) ?

A) 2x + y =−4, B) 2x− y = 4

C)−x − 2y = 1, D) −x + 2y = 2

Ans: B

4. Determine all intercepts, if any, for the graph of the function ^x2−5x−6_x . A) (0,−6); (2, 0),(3, 0) B) (−6, 0)

C)(6, 0),(−1, 0) D) (0,−6),(−6, 0)

Ans: C

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