CONCEPTS OF FUNCTIONS

Determine if the following sets of ordered pairs, table of values, and equations represent a function.

1. {(-4,2), (0,9), (-4,-8), (4,5), (-1, 10), (11, 15)}

2. {(math, science), (math, English), (math, economics), (math, history)}

3. f(x) = x2

4. f(x) = |2x + 9|

x 2 4 6 8

f(x) 4 16 36 64

Guide Questions:

1.Based on the activity, how did you determine that the given relation is function or not?

2.What concept did you used in finding the relation as a function or not?

A Function f is a correspondence between two

sets, the domain and the range, such that for each value in the

domain, there corresponds exactly one value in the range.

Types of Functions

1.Polynomial function

2.Constant function

3.Linear function

4.Quadratic function

5.Cubic function

Determine if the following sets of ordered pairs, table of values and equations represent a function.1. {(5,9), (0,-3), (3,1), (11,-7)}2. {(apple, banana), (apple, guyabano),

(apple, guava), (apple, pineapple)}3. f(x) = x4

4. x = y2

5.x 2 6 2 8

f(x) 4 8 9 10