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Mathematics 10 Online
OpenStudy (anonymous):

If the range of the function f(x)= 5x − 3 is {-13, -8, -3, 12, 17}, what is its domain? a.{0, 1, 2, 3, 4} b.{-2, -1, 0, 1, 2} c{-2, -1, 0, 3, 4} d.{-4, -3, 0, 3, 4}

Mehek (mehek14):

Domains are the values of x

OpenStudy (anonymous):

yes but arent they asking for the domain?

Mehek (mehek14):

yes they want to know what you substituted x with to get the range

Mehek (mehek14):

so try A substitute the value of x with 0

OpenStudy (anonymous):

oh okay so since the domain is not gving its like im working backwards right?

Mehek (mehek14):

first do what I said substitute the value of x with 0 and see if you get -13

OpenStudy (anonymous):

no

Mehek (mehek14):

ok so A is not the answer Move on to B

OpenStudy (anonymous):

-13

Mehek (mehek14):

that's for -2 how about -1?

Mehek (mehek14):

you have to check if all are correct to know that it is the right answer

OpenStudy (anonymous):

ok thanks

OpenStudy (anonymous):

i got it now :)

Mehek (mehek14):

So you'll be able to find the answer now?

OpenStudy (anonymous):

yes the answer was c

OpenStudy (anonymous):

i really appreciate it thanks

Mehek (mehek14):

yes you are correct and your welcome

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