Proportional relationships

Is this equation y = 14x showing proportionality?

• yes

• no

Write an equation for this relationship.

• y=18x
• y=18.50x
• y=22.50x
• y=22x

What is the constant of proportionality (in miles per hour) based on the table?

• 45
• 90
• 135
• 2

Is this table proportional?

• Yes
• No

Is this graph proportional?

• Yes
• No

What makes a graph proportional?

• Linear
• The line goes through the origin
• Curvy line
• Linear and the line goes through the origin

Write an equation for this situation.

• y=9.75x
• y=19x
• y=19.25x
• y=9.5x

Which equation shows a NON-proportional relationship of x and y?

• y = 5x
• y = -5.6x
• y = x + 3
• y = 1/2x

What is the unit rate in this proportional relationship?

• 60 miles/1 hour
• 120 miles/ 2 hours
• 1 mile/ 1 hour

Is this table proportional?

• Yes
• No