We are given the function $f(x) = |x-5| - 1$. We need to determine if the function is even, odd, or neither, state the range of $f(x)$, and sketch the graph of $f(x)$.

AlgebraFunctionsAbsolute ValueEven/Odd FunctionsRange of a FunctionGraphing
2025/4/14

1. Problem Description

We are given the function f(x)=x51f(x) = |x-5| - 1. We need to determine if the function is even, odd, or neither, state the range of f(x)f(x), and sketch the graph of f(x)f(x).

2. Solution Steps

(i) To determine if a function is even, we check if f(x)=f(x)f(-x) = f(x). To determine if a function is odd, we check if f(x)=f(x)f(-x) = -f(x).
f(x)=x51=(x+5)1=x+51f(-x) = |-x - 5| - 1 = |-(x+5)| - 1 = |x+5| - 1.
Since f(x)=x51f(x) = |x-5| - 1, and f(x)=x+51f(-x) = |x+5| - 1, we see that f(x)f(x)f(x) \neq f(-x), so the function is not even.
Also, f(x)=(x51)=x5+1-f(x) = -(|x-5| - 1) = -|x-5| + 1. Since f(x)=x+51f(-x) = |x+5| - 1 and f(x)=x5+1-f(x) = -|x-5| + 1, we see that f(x)f(x)f(-x) \neq -f(x), so the function is not odd.
Therefore, the function is neither even nor odd.
(ii) The absolute value function x5|x-5| is always non-negative, so x50|x-5| \geq 0 for all xx.
Then, x5101|x-5| - 1 \geq 0 - 1, so x511|x-5| - 1 \geq -1.
The minimum value of x5|x-5| is 0, which occurs when x=5x=5. In that case, f(5)=551=01=1f(5) = |5-5| - 1 = 0 - 1 = -1.
As xx moves away from 5 in either direction, x5|x-5| increases without bound.
Thus, the range of f(x)f(x) is [1,)[-1, \infty).
(iii) To sketch the graph, we start with the absolute value function y=xy = |x|. Then, we consider y=x5y = |x-5|, which is the graph of y=xy = |x| shifted 5 units to the right. Finally, we consider y=x51y = |x-5| - 1, which is the graph of y=x5y = |x-5| shifted down 1 unit.
The vertex of the graph is at (5,1)(5, -1). The graph is symmetric around x=5x=5. When x=0x=0, f(0)=051=51=4f(0) = |0-5| - 1 = 5 - 1 = 4.
The graph intersects the x-axis when f(x)=0f(x) = 0, which means x51=0|x-5| - 1 = 0, so x5=1|x-5| = 1.
This gives us x5=1x-5 = 1 or x5=1x-5 = -1. Therefore, x=6x = 6 or x=4x = 4. The x-intercepts are at (4,0) and (6,0).

3. Final Answer

(i) Neither
(ii) [1,)[-1, \infty)
(iii) The graph is a V-shape with vertex at (5,1)(5, -1). The x-intercepts are at x=4x=4 and x=6x=6.