Question

score: 14/30 penalty: 1 off
question
find the value of f(7).
y = f(x)
(graph of a parabola with axes labeled x and y, grid lines, and the function y = f(x) plotted. the x-axis ranges from -10 to 10, y-axis from -10 to 10. the parabola crosses the x-axis at some points and has a vertex. )
answer attempt 1 out of 2

Explanation:

Step1: Locate x=7 on the x - axis

Find the position of \( x = 7 \) on the horizontal (x - axis) of the graph of \( y=f(x) \).

Step2: Find the corresponding y - value

From the point \( x = 7 \) on the x - axis, move vertically until we intersect the graph of \( y = f(x) \). Then, determine the y - coordinate of that intersection point. Looking at the graph, when \( x = 7 \), the corresponding \( y \) - value (which is \( f(7) \)) is - 8 (by visually inspecting the grid and the curve's position at \( x = 7 \)).

Answer:

-8