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}

Question

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}

welshfella · Answer

the range of 5x - 3 is the possible values of 5x - 3

the domain is the corresponding values of x 

For example 

if

5x - 3 = -3    what is the value of x?

welshfella · Answer

solve this equation for x and you have one element of the domain.

jakob · Answer

I am lost

welshfella · Answer

5x - 3 = -3
5x - 3 + 3 = -3 + 3
5x = 0 
so x = what?

welshfella · Answer

the possible values in the range are given to you in the set 

range  = {-13 , -8, -3 , 12, 17}

jakob · Answer

Idk what x is

welshfella · Answer

I just took the  member  -3  and equated it to 5x - 3 in order to find a member of the domain (x)

maddielb · Answer

Where did you get the second -3

welshfella · Answer

5x = 0 
5 * 0 = 0
so x = 0

welshfella · Answer

@maddielb :  - 3 is one element on the range

jakob · Answer

Please hurry need to get this done

welshfella · Answer

so 0 is one member of the domain 

to find the other members  you need to solve 
5x - 3 = -13
5x - 3 = -8
5x - 3 = 12
and 
5x - 3 = 17