2.A relation in which for every element of the domain there corresponds exactly one and only one element of the range?
a. Domain.
b. Range.
c. function.
d. relation.
3. If H is a set containing the ordered pairs ( 1,2 ) , ( 1,3 ), ( 2, 4), ( 0,- 2), ( -1, 1). Its domain is the set containing?
a. 1, 2 , 3 , 4.
b. 1 , 2 , 4.
c. -1 , 0 , 1 , 2.
d. 1 , 1 , 0, 2 , 4.
4. Is set H above a function?
a. Yes.
b. No.
c. Maybe.
d. undecided.
5. The range of set H above is the set containing?
a. 0 , 1, 2, 3, 4.
b. 1, 2 , -2 , 3 , 4.
c. -2, 2, 3 , 4.
d. 0 , - 2 , 2 , 4.
6. Which of the following statement is true?
a. All relations are functions.
b. All functions are not relations.
c. All functions are relations.
d. All relations are not functions.
7. The vertical line test determines whether a graph represents a function or not. In what instance will the vertical line exhibit for a graph to be a function?
a. The vertical line intersects the graph in more than one point.
b. The vertical line crosses the x - axis.
c. The vertical line intersects the graph at only one point.
d. The vertical line is parallel to the y - axis.
8. Input value is to x as output value is to ___?
a. f (x)
b. 0
c. f(x ) + g(x)
d. 1
9. Which of the following DOES NOT belong to the group?
a. ordered pairs
b. equations
c. graphs
d. sets
10. A function that is defined by more than one other functions is called ___?
a. double function
b. piece-wise function
c. composite function
d. multi function​