Question

he domain of the following relation: R: {(3, −2), (1, 2), (−1, −4), (−1, 2)} is

{−1, 1, 3}

{−1, −1, 1, 3}

{−4, −2, 2, 2}

{−4, −2, 2}

Answer 1

the domain is the set of allowed input values

Answer 2

so which variable is the input of a function: x or y?

Answer 3

http://www.mathwarehouse.com/algebra/relation/images2/domain-range-picture.gif

Answer 4

x

Answer 5

so the domain is the set of all of the possible x values allowed

Answer 6

if you have a bunch of points, it's just the set of the x coordinates of each point

Answer 7

so -1,-1,1,3?

Answer 8

very close, but with any set, you toss any duplicates

Answer 9

oh ok thx

Answer 10

np