Illustrative Math - Algebra 1 - Unit 4 - Lesson 1 - Formative Library | Library

The prices of different burgers are shown on this sign.
Based on the information from the menu, is the price of a burger a function of the number of patties? Explain your reasoning.

8.F.1

F.IF.4

8.F.5

F.IF.1

The distance a person walks, d, in kilometers, is a function of time, t, in minutes, since the walk begins.

Select all true statements about the input variable of this function.

Distance is the input

Time of day is the input

Time since the person starts walking is the input.

t represents the input

d represents the input

The input is not measured in any particular unit.

The input is measured in hours

For each input, there are sometimes two outputs.

8.F.1

F.IF.4

8.F.5

F.IF.1

It costs $3 per hour to park in a parking lot, with a maximum cost of $12.

Explain why the amount of time a car is parked is not a function of the parking cost.

8.F.1

F.IF.4

8.F.5

F.IF.1

Here are clues for a puzzle involving two numbers.
Seven times the first number plus six times the second number equals 31.
Three times the first number minus ten times the second number is 29.
What are the two numbers? Explain or show your reasoning.

8.F.1

F.IF.4

8.F.5

F.IF.1

To keep some privacy about the students, a professor releases only summary statistics about student scores on a difficult quiz.
Based on this information, what can you know about outliers in the student scores?

There is an outlier at the upper end of the data.

There is an outlier at the lower end of the data.

There are outliers on both ends of the data.

There is not enough information to determine whether there are any outliers.

8.F.1

F.IF.4

8.F.5

F.IF.1

10.

11.

This lesson is from Illustrative Mathematics. Algebra 1, Unit 4, Lesson 1. Internet. Available from https://curriculum.illustrativemathematics.org/HS/teachers/1/4/1/index.html ; accessed 26/July/2021.

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