Understanding linear functions

XRaY to find the rule.

• y = x + 2

• y = x + 4

• y = 2x

• y = 4x

The Florida panther is known to sleep about 18 hours a day. About how many hours would a Florida panther sleep in 3 weeks?

• 478 hours

• 378 hours

• 252 hours

• 54 hours

Consider the sales of a lemonade stand over four consecutive days. Is the amount of lemonade sold each day increasing, decreasing, or neither based on the data below? | Day | Lemonade Sold (cups) | |---|---| | Monday | 50 | | Tuesday | 60 | | Wednesday | 70 | | Thursday | 80 |

• Increasing

• Decreasing

• Neither

Could have four as a factor.

• Even

• Odd

What is "K"?

• 92/4

• 69/3

• 23/1

• 46/2

If four ice creams cost $3.20, what would 8 ice cream cost?

• $7.20

• $6.40

• $10.00

• $9.60

What is the rate of change in miles with respect to the hours?

• 8 miles per hour

• 2 miles per hour

• 4 miles per hour

• The rate of change is not constant.

Pat needs 14 sticks of pepperoni to make 28 pizzas. How many sticks of pepperoni are needed to make 36 pizzas?

• 15 pizzas

• 18 sticks

• 18 pizzas

• 252 sticks

It costs $7.50 per person to watch a movie at a theater. How much would it cost for 5 people?

• $7.50

• $12.50

• $37.50

• $1.5

What is the constant of proportionality? 

• 45 mph
• 90 mph
• 135 mph
• 2 mph