Understanding Scale and Proportions

Front

What is the Constant of Proportionality?

Back

The Constant of Proportionality is represented by the variable k and can be described as the unit rate, defined by the equation k = y/x.

Front

Which equation represents a proportional relationship?

Back

Front

If a scale drawing uses a scale of 1 cm : 2 m, what is the actual length of a room that is 8 cm long in the drawing?

Back

The actual length of the room is 16 m.

Front

Write the equation for the table given where y is proportional to x and the constant of proportionality is 8.

Back

The equation is y = 8x.

Front

What is the ratio of flour to sugar if a recipe uses 2 cups of flour for every 5 cups of sugar?

Back

The ratio of flour to sugar is 2:5.

Front

Define Scale Factor.

Back

Scale Factor is a number that scales, or multiplies, some quantity. It is used in scale drawings to represent the ratio of the dimensions in the drawing to the actual dimensions.

Front

What is a proportional relationship?

Back

A proportional relationship is a relationship between two quantities where the ratio of one quantity to the other quantity is constant.

Front

How do you find the scale factor in a scale drawing?

Back

To find the scale factor, divide the actual measurement by the corresponding measurement in the drawing.

Front

What does it mean if two quantities are directly proportional?

Back

If two quantities are directly proportional, as one quantity increases, the other quantity increases at a constant rate.

Front

What is the formula for finding the constant of proportionality?

Back

The formula for finding the constant of proportionality is k = y/x, where y is the dependent variable and x is the independent variable.