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

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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?

The slope is 4.5 and represents the rate of growth, in centimeters per week. The y-intercept is 1.5 and represents the initial height, in centimeters, of the tomato plant.

The slope is 4.5 and represents the initial height, in centimeters, of the tomato plant. The y-intercept is 1.5 and represents the rate of growth, in centimeters per week.

The slope is 1.5 and represents the rate of growth, in centimeters per week. The y-intercept is 4.5 and represents the initial height, in centimeters, of the tomato plant.

The slope is 1.5 and represents the initial height, in centimeters, of the tomato plant. The y-intercept is 4.5 and represents the rate of growth, in centimeters per week.

8.F.B.4.a

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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?

The slope of the equation is 150 because it is the constant rate of change for each hour of labor.

The slope of the equation is 55 because it is the constant rate of change for each hour of labor.

The slope of the equation is 150 because it represents the initial service fee.

The slope of the equation is 55 because it represents the initial service fee.

8.F.B.4.a

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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?

The y-intercept is 8, and it represents the cost of $8 for a pizza with no toppings.

The y-intercept is 1.50, and it represents the cost of $1.50 for each topping on the pizza.

The y-intercept is 1.50, and it represents the cost of $1.50 for a pizza with no toppings.

The y-intercept is 8, and it represents the cost of $8 for each topping on the pizza.

8.F.B.4.a

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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.

The radio station hosted 18 events.

The radio station gives away 18 prizes at each event.

The radio station will run out of prizes after 18 events.

The radio station started with 300 prizes before it hosted an event.

The radio station spent $300 on the prizes.

8.F.B.4.a

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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.

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8.F.B.4.a

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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