Module 12 Relationships in Two Variables

What are the coordinates of point B?

• ( 4 , -3 )
• ( 4 , 3 )
• ( -3 , 4 )

What are the coordinates of point D?

• ( 4 , 3 )
• ( -4 , -3 )
• ( -3 , -4 )

Which quadrant is point E located in?

• Quadrant I
• Quadrant II
• Quadrant III

The graph shows the number of words per minute that Paola types. Which statement about the relationship represented in the graph is true?

• The number of minutes is the dependent quantity.
• The number of words is the dependent quantity.
• The number of words is the independent quantity.

The table represents the relationship between the number of gallons of gas in a gas tank and the number of miles that can be driven. Which quantity represents the dependent quantity in this table?

• Miles driven
• Miles per gallon
• Gallons of gas

Which equation best represents the relationship between x and y?

• y = 3x
• y = x + 3
• y = x + 2

The cost of downloading one song from a website is $0.99.
Which equation can be used to find t, the cost in dollars of downloading n songs?

• t = 0.99n
• t = n + 0.99
• n = 0.99t

Identify the independent variable.

Lana practices cello for 15 minutes each day. How many minutes does she practice in 3 days?

• number of minutes

• number of days

• 45 days

• practicing cello

What is the dependent variable?

Lana practices the cello for 15 minutes each day. How many minutes does she practice in 3 days?

• number of days

• 45 minutes

• number of minutes

• practicing cello

What is the algebraic equation for this table?

• y = x + 3

• y = 3x

• y = x ÷ 3

• y = x - 3