Proportional Relationships: Tables

Three pounds of bananas cost $1.95. Which of the following is not true?

• One pound of bananas is $0.75.

• The equation y = 0.65x could be used to determine the cost of x pounds of bananas.

• Seven pounds of bananas is $4.55.

• Three pounds of bananas is $1.95.

As the x-values increase by 1, the y-values increase by 15. Which equation shows this?

• y = 15 + X

• y = 15 - X

• y = 15x

• y = 15

James is saving $15 per week in order to purchase a gaming console. Create a table to represent the relationship between x, the number of weeks and y, the total amount James has saved.

Write an equation to represent the situation.

• x= 15 (y)

• y= 15 + x

• y= 15 (x)

• y=3 (x)

Mr. Brown asked his students create a representation with a rate of change of 2.5. Circle the students who correctly completed the task.

• Elijah:

  y= 2.4 + x

• Zane:

  Four boxes of tissue

  cost $10.00

• Marco:

  y= 2.5 (x)

• Lisa:

  2.5 = y + x

What is the rate of change?

(y/x)

Mathematical Equivalence

OFF

Find the rate of change.

Write an equation for your answer.

Mathematical Equivalence

ON

Find the rate of change for this proportional table.

(y/x)

Mathematical Equivalence

ON