Extra Credit Exit Ticket| Constant of Proportionality

Find the unit rate of 624 calories in 3 servings.

• 1,872 calories per serving
• 208 calories per serving
• 624 calories per serving
• 621 calories per serving

What is the constant of proportionality for the following graph?

• 80
• 20
• 40
• 160

What is the constant of proportionality for this table?

• $1/9 per hour

• $9 per hour

• $8 per hour

• $18 per hour

Does this graph show a proportional relationship?

• Yes

• No

• Sometimes

Which tables and graphs show a proportional relationship?

• A,C,F

• B,D,E

• B,C,F

• A,B,D

Identify the constant of proportionality.

• k = 2x

• k = 2

• k = 4

• none (not proportional)

The constant of proportionality is also the unit rate.

• True
• False

What makes a graph proportional?

• Linear (straight line)
• The line goes through the origin
• Curvy line
• Linear and the line goes through the origin

A car travels 420 miles in 8 hours.  If the car continues at the same rate, how far will it travel in 12 hours?

• 630 miles
• 630 hours
• 600 miles
• 540 hours

Hamburger sells for 3 pounds for $6. If Alicia buys 10 pounds of hamburger, how much will she pay?

• $30
• $20
• $60
• $10