Math 8 Testlet 013- Explain the Parameters of Linear Function 8.F.B.4a - Elissa Belmont | Library

Required

1

The equation h = 1.5w + 4.5 can be used to model the height, h, in centimeters, of a tomato plant after w weeks. Which statement about the slope and y-intercept of the equation is true?

8.F.B.4.a

Required

1

An electrician charges an initial service fee of $150 and an additional $55 per hour of labor. The relationship between the total cost and the number of hours of labor can be represented with a linear equation. Which statement about the slope of the equation is true?

8.F.B.4.a

Required

1

The cost of a pizza, c, in dollars, is represented by the equation c = 1.50t + 8, where t is the number of toppings on the pizza. What is the y-intercept of the equation, and what does it represent?

8.F.B.4.a

Required

1

A radio station gives away prizes at each event it hosts. The equation y = 300 – 18x represents the number of prizes remaining, y, after x events. Select the two statements that are true about the situation.

8.F.B.4.a

Required

1

Nicole opens a savings account with $100. She deposits $20 into the savings account each week. She graphs the amount of money in her savings account over time. What are the coordinates of the y-intercept of Nicole’s graph?

(_______ ,_______ )

8.F.B.4.a

Ben borrowed money from a bank. The graph shows the amount, in dollars, he owed to the bank over time, in months.

Required

1

Use the words and numbers in the drop-down boxes to correctly complete the sentences.

Ben borrowed __________ from the bank.

Ben paid back the money he borrowed from the bank in __________ months, which is represented by the __________ of the graph.

8.F.B.4.a

Required

4

The eighth-grade class at Jackson Middle School has a bake sale to earn money for an
end-of-year trip. At the bake sale, cookies sell for $0.50 each and brownies sell for $1.25 each. A total of $2,500 is needed for the trip. A function can be used to represent the numbers of cookies, x, and brownies, y, the eighth-grade class can sell to raise $2,500. Identify the x- and y-intercepts of the function. Explain the meaning of the x- and y-intercepts in the context of this situation.

8.F.B.4.a