Algebra II 4.

Question

Determine the domain and range of the function.
f(x) = 2x
Question 4 options:

1) Domain: (-∞, 0); Range: [0, ∞)

2) Domain: (-∞, ∞); Range: (-∞, ∞)

3) Domain: [1, ∞); Range: [0, ∞)

4) Domain: [2, ∞); Range: [2, ∞)

Answer 1

Hi Carrie,

 

4.  Determine the domain and range of the function.
f(x) = 2x
Question 4 options:

1) Domain: (-∞, 0); Range: [0, ∞)

2) Domain: (-∞, ∞); Range: (-∞, ∞)

3) Domain: [1, ∞); Range: [0, ∞)

4) Domain: [2, ∞); Range: [2, ∞)

 

The domain is the x-values and the range is the y-values of a function.

 

f(x) = 2x

 

this function is linear with a y-intercept at (0,0).  The domain and range of all linear functions is all real numbers which can be written as negative infinity to positive infinity.

 

ANSWER:  Domain: (-∞, ∞); Range: (-∞, ∞)     (Option #2)