Unit 4 Interpreting practice 2/9

According to the graph, at what speed is this car traveling in miles per hour?

• 80 mph

• 20 mph

• 40 mph

• 160 mph

Tim bought a new phone. He paid $125 on the day of purchase, then $50 per month until it was paid off. What linear equation models this situation?

• y = 50x - 135

• y = 50x + 125

• y = 125 + 50

• y = 50x

Which situation below is representative of an initial value?

• putting $300 a month into savings

• buying $30 worth of supplies for a lemonade stand

• Spending $3 per ride at the fair

• Paying $2 for parking every day

List the types of intervals that the graph demonstrates in order.

• decreasing, constant, increasing, constant
• increasing, decreasing, constant
• increasing, constant, increasing, constant
• increasing, constant, decreasing, constant

Which statement is true about this function?

• The function is never constant

• The function is always increasing

• The function is never decreasing

• The function increases at the same rate between the interval x=11:00 and x=13:00

Over which interval of time is this person returning home?

• A

• B

• C

• D

• E

• 2 toppings

• 1 topping

• 4 toppings

• 3 toppings

Sarah tracked the value of her car in this graph.

What does the point (2005, 14500) represent?

• In 2005, her car was worth $14,500.

• Her car was worth $2,005.

• She bought the car for $14,500.

• Her car lost $2,005 in value from $14,500.

Russel's height is tracked in this graph. What does the point (12, 3) represent?

• Russel was 3 feet tall when he was 12 years old.

• Russel grew 3 inches when he was 12 years old.

• Russel grew 12 inches when he was 3 years old.

• Russel grew 12 inches over 3 years.

What is the domain of this function? 

• All real numbers (because graphs never end)
• All the numbers between -2 and 2
• All the numbers except between -2 and 2
• All real numbers above -2