SOLUTION: What is the domain of the function: f(x) = 2x + 3 when the range is {5,7,9}? f(x) = 1/4x + 3 when the range is {3, -17, 27}? f(x) = -3x - 5 when the range is {-2, 0, 3}?

Algebra.Com
Question 100140: What is the domain of the function:
f(x) = 2x + 3 when the range is {5,7,9}?
f(x) = 1/4x + 3 when the range is {3, -17, 27}?
f(x) = -3x - 5 when the range is {-2, 0, 3}?

Answer by stanbon(75887)   (Show Source): You can put this solution on YOUR website!
What is the domain of the function:
f(x) = 2x + 3 when the range is {5,7,9}?
In three separate steps, set f(x) = 5, then 7, then 9
and solve for x:
x =1 , 2, 3
Domain: {1,2,3}
-------------------------------
f(x) = 1/4x + 3 when the range is {3, -17, 27}?
x = 0, -80, 120
Domain: {0,80,120}
f(x) = -3x - 5 when the range is {-2, 0, 3}?
x = -1, -5/3, -8/3
----------------------------
Cheers,
Stan H.

RELATED QUESTIONS

What is the domain of the function f(x)=3x-3 when the range is R:{3,-7,-9}? (answered by Nate)
What is the range of the function f(x)=x-3 when the domain is D={-5,-3,-1}? (answered by stanbon)
What is the range of the function f(x) = -x - 3, when the domain is {-1, 0, 4,... (answered by rapaljer)
what is the range of the function f(x)= 2x+7 when the domain is... (answered by Theo)
what is the range of the function f(x)=2/3x+5 when the domain is... (answered by ewatrrr,solver91311)
Given : f(x)=2x^2+2 1. Find the domain of f(x). 2. Find the range of... (answered by josgarithmetic)
What is the range of the function f(x)=3x-4.When the domain... (answered by stanbon)
The range of a function f(x) = 4x-5 is (-1, 7) find its domain (answered by Theo)
if the domain of f(x)=4x^2-4x-2 is (-7,-5,-3,-1,1,2,3,4,6) what is the range... (answered by edjones)