linear word problemsand graphing (slope intercept form)

An airplane 30,000 feet above the ground begins descending at a rate of 2,000 feet per minute. Write an equation to model the situation.

• y = -2000x + 30000

• y = 2000x + 30000

• y = 2000x - 30000

• y = -30000 + 2000

Tags

CCSS.6.EE.C.9

An airplane 30,000 feet above the ground begins descending at a rate of 2,000 feet per minute. Use your equation to find the altitude of the plane after 5 minutes.

• 20,000 feet after 5 minutes

• 40,000 feet after 5 minutes

• 148,000 feet after 5 minutes

The amount of money in your savings account in terms of the months, x, can be represented by the equation y = 50x + 200. What does the slope represent in this equation?

• the money started with in your bank account

• the total in your bank account

• how much money you are saving each month

• the number of months saved

The amount of money in your savings account in terms of the months, x, can be represented by the equation y = 50x + 200. What does the y- intercept represent in this equation?

• the money started with in your bank account

• the total in your bank account

• how much money you are saving each month

• the number of months saved

Peter collects cool hats. He has 6 hats already, and he collects 2 hats a week.

• y = 2x + 6

• y = 6x + 2

• y = 2x - 6

• y = 6x - 2

At Ashley's Car Rental Agency, renting a car costs $35 plus $0.75 for every mile it is driven.

• y = x(35 + 0.75)

• y = 35x + 0.75

• y = 0.75x + 35

• y = 0.75(x + 35)

The Roaming Cell Phone Company charges $15.00 per month plus $0.20 per minute of airtime usage. If Chaz uses x minutes of airtime, what is an equation that can be used to determine his monthly cell phone bill (C)?

• C = 0.20x + 15

• C =15 (0.20x)

• C = 15 + x + 0.20

• C = 0.20 + 15x

A plant is 5cm tall and growing at a rate of 3cm a month.

• y = 5 + 3
• y = 5x + 3
• y = 3x + 5
• y = 3x + 5x

Tags

CCSS.6.EE.C.9

Caleb is climbing down from 100 feet high descending 30 feet per minute.

• y = 100 - 30x

• y = 100 + 30x

• y = 100x + 30

• y = 100x - 30

Lee is paid $10 per week for selling newspaper subscriptions. He is also paid $3.50 for each new customer (x) that signs up for the subscription. Which equation represents the amount (y) Lee earns per week?

• y = 3.5x

• y= 10 + x

• y = 10 + 35x

• y = 10 + 3.5x