Evaluating Functions in Desmos

This video tutorial demonstrates how to use Desmos to evaluate functions using both function notation and a table. It begins with an introduction to Desmos and explains how to input a function to see its graph. The tutorial then covers evaluating functions using function notation by substituting values directly into the function. It also shows how to use a table to find function values for different x-values and visualize these points on a graph. The video concludes with tips on using Desmos features like the magnifying glass for zooming and visualizing intersections on the graph.

What is the primary purpose of using Desmos as described in the video?

• To design geometric shapes

• To solve algebraic equations

• To evaluate functions using function notation and tables

• To create complex animations

How do you evaluate the function G(x) at x = 3 using function notation in Desmos?

• Type G(x) = 3

• Type G of 3

• Type G(x) = x^2 - 5x + 3

• Type G(3)

What is the result of evaluating G(x) at x = 3 using function notation?

• 3

• -3

• 0

• 9

What tool in Desmos allows you to switch from function notation to a table?

• The pencil icon

• The cog wheel

• The graph tool

• The magnifying glass

When using a table in Desmos, what is the y-value when x = -1 for the function G(x)?

• 3

• -1

• 9

• 17

How can you find the value of G(x) at x = 10 using a table in Desmos?

• Click the cog wheel

• Type 10 in the function notation

• Type 10 in the table

• Use the graph tool

What feature in Desmos helps you see all points from the table on the graph?

• The zoom fit feature

• The graph tool

• The table view

• The function notation

What happens when you type 'x=3' in Desmos?

• It evaluates the function at x=3

• It shows a vertical line

• It shows a horizontal line

• It clears the graph