Linear Relationships

The graph shows the growth of a tree over time.  Is the data represented proportional?

• Yes
• No

Bowling costs $4 for shoe rental plus $5 for every game. Which equation shows how much it costs to go bowling for x games?

• y = 4 + 5x
• y = 5 + 4x
• y = 4•5•x
• y = 5x - 4

A dog walker earns $10 plus $3 per dog. What equation represents this model? 

• y=3x + 10
• y=10x + 3
• y=13x
• y=10x - 3

You plan to go snowboarding. The resort charges $15 an hour in addition to $25 to rent a board. Write an equation that represents the cost to go snowboarding for the day.

• y=15x-25
• 15x+25y=100
• 25x+y=15
• y=15x+25

A dog walker earns $10 plus $3 per dog. What equation represents this model? 

• y=3x + 10
• y=10x + 3
• y=13x
• y=10x - 3

A yoga class in a fitness center charges a $200 registration fee plus $12 per lesson.  Write an equation to determine the amount of money a person will spend (y) for any number of lessons (x).

• y = 200x + 12
• x = 200 + 12y
• y = 12x + 200

Is the following equation proportional or non proportional:
y= 4x

• Proportional
• Non Proportional

Is the following equation proportional or non proportional:
y= 4x - 5

• Proportional
• Non Proportional

Is the following equation proportional or non proportional:
y= 5 + 3x

• Proportional
• Non Proportional

Is the following equation proportional or non proportional:
y= 12x

• Proportional
• Non Proportional