HW: 4.16.4 (Writing Linear Equations from Verbal Description)

A bamboo plant is 30 inches tall. One day the bamboo plant grows 1.5 inches each hour. What equation models the bamboo plant’s height during that day, y, as a function of the number of hours, x?

Mathematical Equivalence

ON

Write an equation for the linear function described below.

The graph of the function has a y-intercept of 13. When x increases by 1, y decreases by 4.

Mathematical Equivalence

ON

Write an equation for the linear function desribed.

In order to stake, you need to rent skates for $4.50 per hour. Additionaly, you need to pay a $7 for a helmet rental.

Mathematical Equivalence

ON

A hot-air balloon is flying at an altitude of 150 feet. When the pilot heats the air in the balloon, it rises at a constant rate. The altitude depends on the ​ number of minutes.

Let x =​ ​ (a)  

Let y = ​ ​ (b)  

• number of minutes the balloon rises
• altitude of the balloon

A hot-air balloon is flying at an altitude of 150 feet. When the pilot heats the air in the balloon, it rises at a constant rate. The altitude depends on the ​ number of minutes. Use data from the table to find the rate of change.

• 400 ft per min

• 150 feet

• 400 feet

• 150 feet per min

A hot-air balloon is flying at an altitude of 150 feet. When the pilot heats the air in the balloon, it rises at a constant rate. The altitude depends on the ​ number of minutes. Use data from the table to find the initial value.

• 400 ft per min

• 150 feet

• 400 feet

• 150 feet per min

A hot-air balloon is flying at an altitude of 150 feet. When the pilot heats the air in the balloon, it rises at a constant rate. The altitude depends on the ​ number of minutes. Use data from the table to write the equation of the linear function.

Mathematical Equivalence

ON

A hot air balloon rises at a constant rate of 3 meters per second. After 20 seconds, the balloon's altitude is 140 meters. The balloons altitude, y, is a function of the time, x. Which of the following is an ordered pair from the linear function?

• (3, 20)

• (3, 140)

• (20, 140)

• (140, 20)