Question

use this graph of f to find f(3).

Explanation:

Step1: Locate x=3 on x - axis

Find the vertical line corresponding to \( x = 3 \) on the coordinate plane.

Step2: Find intersection with graph

Draw a vertical line at \( x = 3 \) and find its intersection point with the graph of \( f(x) \). Then, draw a horizontal line from this intersection point to the y - axis to find the corresponding y - value. From the graph, when \( x = 3 \), the y - value (which is \( f(3) \)) can be determined by looking at the grid. The graph is a parabola, and at \( x = 3 \), by observing the grid lines, we can see that the y - coordinate of the point on the graph at \( x = 3 \) is 7 (assuming the grid has appropriate scaling, and by visually inspecting the position of the point \((3,f(3))\) on the parabola, we can see that it lies on the horizontal line corresponding to \( y = 7\)).

Answer:

\( f(3)=7 \)