Questions: Select the correct answer.
Consider function f.
f(x) = √(x-2)
Which graph represents function f?
A. W
B. X
C. Y
D. z
Transcript text: Select the correct answer.
Consider function $f$.
\[
f(x)=\sqrt{x-2}
\]
Which graph represents function $f$ ?
A. W
B. X
C. $Y$
D. $z$
Solution
Solution Steps
Step 1: Identify the Domain of the Function
The function given is f(x)=x−2. The expression inside the square root must be non-negative for the function to be real-valued. Therefore, x−2≥0, which simplifies to x≥2.
Step 2: Determine the Starting Point
Since x≥2, the function starts at x=2. At x=2, f(2)=2−2=0=0. So, the point (2, 0) is on the graph.
Step 3: Analyze the Shape of the Graph
The function f(x)=x−2 is a square root function shifted 2 units to the right. The graph will start at (2, 0) and increase slowly as x increases.
Final Answer
The correct graph is Z, as it starts at (2, 0) and increases to the right.