Understanding Function Values and Graphs

This video tutorial explains how to evaluate a function using a graph. The instructor demonstrates the process by finding the values of f(0), f(-1), f(1), and f(3) on a given graph. Each step involves identifying the x-coordinate on the graph, moving vertically to intersect the graph line, and determining the corresponding y-value. The video concludes with a call to action for viewers to like, subscribe, and explore more videos.

What is the main focus of the video?

• Solving equations algebraically

• Finding the slope of a line

• Graphing linear equations

• Evaluating functions from a graph

What is the function defined in the video?

• g(x)

• h(x)

• f(x)

• k(x)

How do you find f(0) on the graph?

• Move in a circular path to the graph

• Move diagonally to the graph

• Move vertically to the graph

• Move horizontally to the graph

What is the value of f(0)?

• 1

• 0

• 2

• 3

What is the y-value when x = 0?

• 2

• 0

• 1

• 3

What does each block on the graph represent?

• 2 units

• 1 unit

• 5 units

• 10 units

To find f(-1), in which direction do you move to hit the graph?

• Down

• Up

• Left

• Right

What is the value of f(-1)?

• 0

• -2

• 1

• -1

Where does the graph intersect the x-axis for f(1)?

• At y = -1

• At y = 0

• At y = 1

• At y = 2

What is the value of f(1)?

• 1

• 0

• -1

• 2