9 Weeks Test Review

What makes a graph proportional?

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

Does the graph show a proportional relationship?

• Yes
• No

• Proportional

• Non-proportional

• Proportional

• Non-proportional

In the equation y = 14x, what is the constant of proportionality?

• y
• x
• 14

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

Ross walked 7 miles (y) in 2 hours (x). What is the constant of proportionality?

• 3.5 miles per hour
• 7/2 miles per hour
• 7.2 miles per hour
• 3 miles per hour

Write an equation for this situation.

• y=9.75x
• y=19x
• y=19.25x
• y=9.5x

What is the formula for a proportional relationship?

• y=kx
• y=k/x
• z=ykx
• y=ky