Integer Solutions and Transformations

The video tutorial explores finding integer solutions to the equation x + y + z = 8 under different conditions: when x, y, and z are non-negative, positive, and greater than or equal to -3. It uses the stars and bars method to calculate the number of solutions for each scenario, demonstrating combinatorial techniques to solve equations with constraints.

What is the equation we are trying to find integer solutions for?

• x + y + z = 8

• x + y + z = 17

• x + y + z = 5

• x + y + z = 10

How many integer solutions are there when x, y, and z are non-negative?

• 10

• 45

• 21

• 171

Which method is used to find the number of solutions when x, y, and z are non-negative?

• Trial and Error

• Stars and Bars

• Substitution

• Graphical Method

What is the number of stars used in the stars and bars method for non-negative solutions?

• 17

• 10

• 8

• 5

Tags

CCSS.8.EE.C.7B

What is the number of bars used in the stars and bars method for non-negative solutions?

• 1

• 2

• 3

• 4

What is the number of integer solutions when x, y, and z are positive?

• 171

• 10

• 21

• 45

What transformation is applied to find solutions when x, y, and z are positive?

• Add 1 to each variable

• Subtract 1 from each variable

• Multiply each variable by 2

• Divide each variable by 2

How many integer solutions exist when x, y, and z are greater than or equal to negative three?

• 10

• 45

• 21

• 171

What transformation is used to find solutions when x, y, and z are greater than or equal to negative three?

• Divide each variable by 3

• Multiply each variable by 3

• Subtract 3 from each variable

• Add 3 to each variable

What is the new equation formed when x, y, and z are greater than or equal to negative three?

• x + y + z = 17

• x + y + z = 8

• x + y + z = 10

• x + y + z = 5