Question

question
the graph of $y = f(x)$ is shown below. which point could be used to find $f(4)$?

answer
b c
a d

Explanation:

Step1: Recall function notation

For a function \( y = f(x) \), \( f(4) \) means the \( y \)-value when \( x = 4 \). So we need the point with \( x \)-coordinate 4.

Step2: Identify the point with \( x = 4 \)

Looking at the graph, point B has an \( x \)-coordinate of 4 (since it's at \( x = 4 \) on the grid). Points A, C, D have different \( x \)-coordinates (A: \( x = 1 \), C: \( x = 5 \), D: \( x=-2 \) approximately).

Answer:

B