Dependent and Independent Variables Writing Equations

Labiba is having the carpet in her room cleaned. It costs $1 to clean each square foot of carpet. The cost of the cleaning is based on the area of the carpet.

Identify the independent variable and the dependent variable.

• Independent: Area of the floor

  Dependent: Cost of cleaning

• Independent: Cost of cleaning

  Dependent: Area of the floor

Tags

CCSS.6.EE.C.9

Which variable is usually represented as the letter y?

• Independent Variable

• Dependent Variable

Tags

CCSS.6.EE.C.9

Which variable is usually represented as the letter x?

• Independent Variable

• Dependent Variable

Tags

CCSS.6.EE.C.9

A runner sets up a training schedule. With each new training session, she will increase her total running time.

Her total running time today will be 3 minutes longer than the previous session's time.

The two variables are today's time and the previous time.

• x: Today's time

  y: Previous time

• x: Previous time

  y: Today's time

Tags

CCSS.6.EE.C.9

Khadijah makes $5 per hour helping her grandfather in his woodshop.

The two variables are the number of hours she works and the total amount of money she earns.

Decide which of these variables will be denoted as x, and which as y.

• x - Number of hours she works

  y - Total amount she works

• x - Total amount she works

  y - Number of hours she works

Tags

CCSS.6.EE.C.9

Khadijah makes $5 per hour helping her grandfather in his woodshop. The money she makes depends on the number of hours she works.

What is the equation that represents this?

• x = 5y

• y = 5 + x

• y = 5x

• x = y + 5

Tags

CCSS.6.EE.C.9