© 2007  Rasmus ehf  og Jóhann Ísak Pétursson

Functions I - Test 1

Print

Instructions
    Read each question carefully and choose the answer that you think is most likely to be correct. You can only choose one answer for each question  When you are ready, mark your answers in the spaces on the computer screen and click on the button 'Send answers'. Good luck!

1.        Which of the following equations are not functions?

Check here:

Possible answers:
A −y = −x
B y = 1 − x
C y2 = x + 1
D

y3 = x − 1

2.       Which of the following is the graph of y = 2 − x?

                                                  

Check here:

Possible answers:
A graph 1
B graph 2
C graph 3
D

graph 4

3.        Which of the following is not the graph of a function?  

                             

Check here:

Possible answers:
A graph 1
B graph 2
C graph 3
D graph 4

4.       Which of the following functions does not have a value when x = 1?

Check here:

Possible answers:
A f(x) = x2
B f(x) = 2x
C
D

5.       Given the function f(x) = x2 + 2. Find f(0).

Check here:

Possible answers:
A 1
B 2
C 3
D 4

6.       Given the function g(x) = 3x + x. Find g(1).

Check here:

Possible answers:
A 1
B 2
C 3
D 4

7.       Given the function h(x) = x + 1. Find h(a−1).

Check here:

Possible answers:
A a − 2
B a − 1
C a
D a + 1

8.       Given the function i(x) = x2 + x. Find  i(2a).

Check here:

Possible answers:
A 2a2 + 2a
B 4a2 + 2a
C 4a
D
6

9.       Where does the graph of the function j(x) = 2x − 1. cut the y axis.

Check here:

Possible answers:
A −1
B 0
C 1
D 2

 

10.     Where does the graph of the function  k(x) = 4x − 4. cut the x axis.

Check here:

Possible answers:
A x = 1
B x = 2
C x = 3
D x = 4 

 

Percentage answered correctly =

Correct answers: Your answers: