Question

What are the domain and range of the function {(3, 1), (5, –1), (9, –1), (2, 7), (–4, 1)}?

A.
Domain: {1, –1, 7}; Range: {3, 5, 9, 2, –4}

B.
Domain: {3, 5, 9, 2, –4}; Range: {1, –1, 7}

C.
Domain: {3, 5, 9, 2 }; Range: {1, 7}

D.
Domain: {1, 7}; Range: {3, 5, 9, 2 }

Answer 1

@mathstudent55

Answer 2

@Michele_Laino

Answer 3

@agent0smith

Answer 4

The domain is the set that contains every number used as an x-coordinate.
The range is the set that contains every number used as a y-coordinate.

Answer 5

@zzr0ck3r

Answer 6

what @mathstudent55 said

Answer 7

but how do you do it

Answer 8

list all of the numbers in the first coordinate

Answer 9

3,5 ,?,?,?

Answer 10

so b

Answer 11

What are the x-coordinates of all the points below?

{(3, 1), (5, –1), (9, –1), (2, 7), (–4, 1)}

Answer 12

correct

Answer 13

oh ok i understand its b right

Answer 14

B is correct.

Answer 15

thx @ mathstudent could you give @zzr medal