CAASPP Review Unit 1 and Unit 2

Front

What is the constant of proportionality?

Back

The constant of proportionality (r) is the ratio of the dependent variable (y) to the independent variable (x) in a proportional relationship, expressed as y = rx.

Front

If y = 3x, what is the constant of proportionality?

Back

The constant of proportionality is 3.

Front

What does a scale factor of 1:2 mean?

Back

A scale factor of 1:2 means that for every 1 unit in Figure A, there are 2 units in Figure B, effectively doubling the size.

Front

If the scale that maps Figure A to Figure B is 1:5.5, what is the relationship between the sizes of the figures?

Back

Figure B is 5.5 times larger than Figure A.

Front

How do you find the value of x when given a scale factor?

Back

To find the value of x, multiply the corresponding dimension in Figure A by the scale factor.

Front

What is the equation form for a proportional relationship?

Back

The equation form for a proportional relationship is y = rx, where r is the constant of proportionality.

Front

If y = 1.33x, what is the constant of proportionality?

Back

The constant of proportionality is 1.33.

Front

What is a scale factor?

Back

A scale factor is a number that scales, or multiplies, some quantity. It is used to determine the size of one figure in relation to another.

Front

If the scale factor applied to Figure A to produce Figure B is 6, what does this imply?

Back

This implies that Figure B is 6 times larger than Figure A.

Front

What is the formula to calculate the constant of proportionality from given values of y and x?

Back

The formula is r = y/x.