Open Up - Grade 7 - Mathematics - Unit 2 - Lesson 9

By Formative Library

Last updated over 2 years ago

7 Questions

Do you belive the following relationship is proportional or not?

The weight of a stack of standard 8.5x11 copier paper vs. number of sheets of paper.

Yes it is porportional.

No it not is porportional.

7.RP.2.c

Do you belive the following relationship is proportional or not?

The weight of a stack of different-sized books vs. the number of books in the stack.

Yes it is porportional.

No it not is porportional.

7.RP.2.c

Every package of a certain toy also includes 2 batteries.

Are the number of toys and number of batteries in a proportional relationship? If so, what are the two constants of proportionality? 

Yes 3 and \frac{1}{4}

Yes 2 and \frac{1}{2}

Yes 1 and 1

No

7.RP.2.c

Every package of a certain toy also includes 2 batteries.

Use t for the number of toys and b for the number of batteries to write two equations relating the two variables.

7.RP.2.c

Lin and her brother were born on the same date in different years. Lin was 5 years old when her brother was 2.

Find their ages in different years by filling in the table. (Show Your Work)

Is there a proportional relationship between Lin’s age and her brother’s age? (Multiple choice)

There is a proportional relationship.

There is no proportional relationship.

7.RP.2.c

A student argues that y=\frac{x}{9} does not represent a proportional relationship between x and y because we need to multiply one variable by the same constant to get the other one and not divide it by a constant. 

Do you agree or disagree with this student?

Agree

Disagree

7.RP.2.c

Quadrilateral A has side lengths 3, 4, 5, and 6. Quadrilateral B is a scaled copy of Quadrilateral A with a scale factor of 2. 

Select all of the following that are side lengths of Quadrilateral B.

7.RP.2.c

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