Question

Use the image to answer the question:



(1 point)
Responses

This is a function.
This is a function.

This is not a function.
This is not a function.
Question 2
Give the domain and range.(2 points)
Domain: {
}

Range: {
}

Question 3
______________________________________________________________________________________________________________________________

Use the table to answer the question:



Which of the following equations describes the function in the table using function notation?

(1 point)
Responses

f(x)=12x−4
f of x is equal to 1 half x minus 4

f(x)=2x+4
f of x is equal to 2 x plus 4

f(x)=12x+4
f of x is equal to 1 half x plus 4

f(x)=2x−4

Answer 1

I can't see the image or the table you mention. Could you either upload the image/table or type the input–output pairs here (for example: x: -2,0,1,3 and y: 4,-4,? etc.)?

Meanwhile, here are quick instructions so you can answer each part yourself:

1) Is it a function?
- A mapping is a function if every input (every element of the domain) goes to exactly one output. If any input is sent to two different outputs, it is not a function.

2) Domain and range
- Domain = list (set) of all input values.
- Range = list (set) of all output values.
- Write them as sets, e.g. Domain: { -2, 0, 1, 3 } Range: { -4, 2, 5 } (no repeats).

3) Choose the equation from a table
- Take two distinct input–output pairs (x1,y1) and (x2,y2).
- Compute slope m = (y2 − y1)/(x2 − x1).
- The function should be f(x) = m x + b. Solve for b using one pair: b = y1 − m x1.
- Or just test each answer choice by plugging in one pair; the right equation will produce the matching y for all pairs.

If you paste the table (or the image), I’ll give the exact answers.