Graphing Linear Equations and Functions

This video tutorial introduces graphing with fractional coordinates using a graphing tool. It covers plotting two equations, x + 2y = 0 and a more complex one, by finding intercepts and testing points. The tutorial demonstrates how to edit and enter fractional coordinates and find the intersection of graphs, emphasizing the importance of entering answers as ordered pairs.

What is the main focus of the video tutorial?

• Graphing linear equations with whole numbers

• Using a graphing tool for plotting fractional coordinates

• Solving quadratic equations

• Understanding basic arithmetic operations

In the equation x + 2y = 0, what is the value of y when x is 0?

• 1

• 0

• 2

• -1

For the equation x + 2y = 0, what is the value of y when x is -2?

• -1

• 2

• 1

• 0

What is the y-intercept of the second graph when x is 0?

• 3

• 10

• 7

• 5

What is the x-intercept of the second graph when y is 0?

• 10.5

• -10.5

• -7

• 7

What is the first step in solving for y in the second graph?

• Substitute 0 for y

• Substitute 0 for x

• Substitute 1 for x

• Substitute 1 for y

What is the result of substituting 0 for y in the second graph?

• x = 10.5

• x = 7

• x = -10.5

• x = -7

When x is 2, what is the value of y in the second graph?

• 25/3

• 15/3

• 20/3

• 10/3

What is the equation used to find y when x is 2 in the second graph?

• 3y = 25

• -3y = -25

• 3y = -25

• -3y = 25

How can you graph a point with fractional coordinates using the tool?

• By editing the coordinates directly

• By guessing the position

• By approximating the value

• By using a calculator