Proportional vs Non Proportional

Which best describes the equation?
y = 75x

• Proportional
• Nonproportional

Which best describes this equation?
y= 3.75x + 2

• Proportional 
• Non-proportional

What is the y-intercept for the following graph and is it proportional or non-proportional?

• Proportional, b=1
• Proportional, b=-2
• Non-proportional, m=1
• Non-proportional, b=1

What is the y-intercept for the following graph and is it proportional or non-proportional?

• Proportional, b=0
• Proportional, m=0
• Non-proportional, b=1
• Non-proportional, b=0

Shawn makes $7.50 an hour to babysit for her next door neighbors.  Describe the graph of this relationship.

• Proportional
• Non-proportional

What is the y-intercept of the graph and is it proportional or non-proportional?

• Proportional, y-intercept is 8 miles
• Non-proportional, y-intercept is 8 miles
• Proportional, y-intercept is 8 hours
• Non-proportional, y-intercept is 8 hours

Which of the situations below represents a non-proportional relationship?

• total distance traveled and number of hours traveled, if John drove his car at a constant rate of 60 miles per hour for 2 hours
• total earnings and number of hours spent babysitting, if Carrie babysat for 4 hours at a rate of $8 per hour
• total fees charged and number of carpeted rooms cleaned, if a carpet cleaning company charges $40 for the first room and $25 for each additional room
• total savings and number of weeks spent saving, if Jeremy saved $10 each week for 6 weeks

Mama Mia’s Pizza sells medium pizza for $7 each and charges a $2 delivery fee per order. Which describes this relationship?

• a non-proportional function with a y-intercept of 2
• a non-proportional function with a y-intercept of 7
• a proportional function with a y-intercept of 2
• a proportional function with a y-intercept of 7 

Proportional or Non-Proportional:
A yogurt company sells yogurt for $0.39 per oz

• Proportional
• Non-Proportional

Proportional or Non-Proportional:
y = 2x + 4

• Proportional
• Non-Proportional