Dependent/Independent Variables, Tables, Equations, and Graphs

Is the graph proportional or non proportional?

• proportional

• non proportional

• both

• neither

Is the graph proportional or non proportional?

• proportional

• non proportional

• both

• neither

A line is linear if it forms a straight line.  The graph has a straight line.  Which best describes this graph?

• linear and nonproportional

• linear and proportional

• nonlinear and nonproportional

• nonlinear and proportional

What is the function of the table?

• y=3x+1

• y=4x-2

• y=x+1

• y=x+7

What is the equation of the line?

• y = 20x

• y = x + 20

• y = 2x

• y = x + 2

A driving range charges $4 to rent a golf club plus $2.75 for every bucket of golf balls you hit. Write an equation that shows the total cost c of hitting b buckets of golf balls.

• c = 2.75b + 4

• c = 2.75b

• c =  4b- 2.75

• c = 2.75b - 4

You earn $18 for every hour you work. Which equation represents this function?

• y=(18/2)x + 0

• y = 18x

• y = 2x + 18

• y = 18x + 2

A holiday meal costs $12.50 a person plus a delivery fee of $30.

• 30 + 12.5x 

• 12.5 + 30

• 12.5 + 30x

You are visiting Houston, Texas and a taxi cab company charges a flat rate of $4.00 for using the cab and $0.95 per mile.  Write an equation to determine the cost when x miles is driven.

• y = .75x

• y = .95x

• y = .95x + 4

• y=4.95x

Write an equation for this relationship.

• y=18x

• y=18.50x

• y=22.50x

• y=22x