Graphing Proportional Relationships

Does this graph show a proportional relationship

• yes

• no

What is the unit rate/constant of proportionality?

• 80 miles in 1 hours

• 20 miles in 1 hours

• 40 miles in 1 hours

• 160 miles in 1 hours

What makes a graph proportional?

• Straight Line
• The line goes through (0,0)
• Curvy line
• Straight line and passes through (0,0)

The constant of proportionality is 9/1. Interpret what that means in the context of this story.

• $9 per hour

• $9 for 3 hours

• 9 hours per $1

What is the equation y=kx for the table?

• y=1/3x
• y=3x
• y=5x
• y=1/5x

Which equation matches the graph?

• y = 7x
• y = 42x
• y = 6x
• y = 2x

The cost y (in dollars) to rent a bike for x hours is proportional. If it costs $40 for 5 hours then write an equation to represent that.

The direct variation equation is

• y = mx + b

• ax + by = c

• y = mx

• d=rt

According to this graph which is a true statement?

• This graph repesents kilometers driven per minute

• This graph represents cost per hour.

• This graph repesents weight per hour.

• This graph represents distance in miles per time in hours.

The unit rate to of a gallon of airplane fuel is $8 per gallon. What will be the slope of the equation?