Question

Help me on this question

Answer 1

Answers are

1. Function
2. Not a function
3. Function
4. Not a function

Explanation

It is a function only if there is one value in the range for every domain value. The domain value cannot go to more than one domain.

1. Has one domain to a unique range
2. Has “b” domain value going to two different range values
3. Has one domain to a unique range
4. Has -8 domain with two different range. Also 5 domain has 3 range values

Answer 2

1) Function

2) Not a function

3) Function

4) Not a function

Explanation:

A function means that the x values can not repeat. For number one you can write it as follows:

(z, 5) (d, -7) (m,1) (j,1)

The x values do not repeat making it a function.

For number 2 it can be written as follows:

(x,x) (w,w) (b,c) (b,e)....

The b value repeats making it not a function.

For the next two, domain is x and range is y. For number 3 the domain does not have any repeating numbers making it a function.

For number 4 the number -8 is repeating making it not a function.