Question

score: 28/30 penalty: 1 off
question
find the value of f(4).
y = f(x)
-10 -9 -8 -7 -6 -5 -4 -3 -2 -1 1 2 3 4 5 6 7 8 9 10
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answer attempt 1 out of 2
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Explanation:

Step1: Locate x=4 on x - axis

Find the position of \( x = 4 \) on the horizontal (x - axis) of the graph.

Step2: Find corresponding y - value

From \( x = 4 \), move vertically (up or down) to intersect the graph of \( y=f(x) \). Then, find the corresponding \( y \) - value on the y - axis. Looking at the graph, when \( x = 4 \), the point on the graph has a \( y \) - coordinate of \( - 4 \) (by visually inspecting the grid and the curve's position at \( x = 4 \)).

Answer:

\( - 4 \)