Linear Slope Applications

If you buy pens ($0.55 each) and a binder ($2.39) and only have $10 in your pocket.

What type of linear function should you write to model this situation?

• Slope-Intercept Form

• Standard Form

• Point-Slope Form

If you buy pens ($0.55 each) and a binder ($2.39) and only have $10 in your pocket.

Write a linear function to model this situation.

• y = 0.55x + 10

• 0.55x + 2.39y = 10

• 10x + 0.55y = 2.39

• y = 0.55x + 2.39

A store sells t-shirts for $12 each and sweatshirts for $15 each. You plan to spend $120 on t-shirts and sweatshirts.

Write a linear function to model this situation.

• 2x + 5y = 120

• 12x + 15y = 120

• 12 + 15y = 2x

• y = 12x + 15

A man is climbing down from 100 feet high descending 30 feet per minute. Which function models his descent?

• y = 100 - 30x

• y = 100 + 30x

• y = 100x + 30

• y = 100x - 30

The equation below represents an elevator's height after an amount of seconds. Using this equation, what should the height of the elevator be after 14 seconds?
y = -3.8x + 290

• 80

• 236.8

• -80

• 72.6

What is the meaning of the slope in the context of the problem?

• It costs $3 for each book.

• The cost of 3 books.

• Each book costs $1.

• $1 for 3 books.

Derrick started a new job at McDonald's. He makes $10 per hour. Which graph models his total weekly earnings in terms of the number of hours he works?

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Abby decides to get a magazine subscription. It costs her $2 per magazine plus an initial fee of $3. Define the variables

• y=the cost, x=the number of magazines

• y=the number of magazines, y=the cost

• the independent variable is distance
• the independent variable is d=25 t
• the dependent variable is time
• the dependent variable is distance

The graph shows the cost of mailing a package based on its weight.  Which statement is true about the situation?

• The dependent variable is total cost

• The dependent variable is weight

• The independent variable is total cost

• The independent variable is cost of a package