Constant of proportionality

Front

Back

Front

A speedboat travels 18 miles in 12 minutes. What is the speed of the speedboat in miles per hour?

Back

90

Front

What makes a graph proportional?

Back

A straight line (linear) that goes through the origin.

Front

Theresa rode her bike 44 miles in 8 minutes. What is the constant of proportionality for the amount of miles per minute?

Back

5.5

Front

Which equation have we been using to find the constant of proportionality (unit rate)?

Back

Front

Define the constant of proportionality.

Back

Front

If the constant of proportionality is 3, what is the value of y when x = 4?

Back

y = 12 (since y = 3 * 4).

Front

What is the unit rate?

Back

The unit rate is the constant of proportionality expressed as a quantity per one unit of another quantity.

Front

How do you find the constant of proportionality from a table of values?

Back

Divide the value of y by the corresponding value of x for any pair of values.

Front

What does a proportional relationship look like on a graph?

Back

It appears as a straight line that passes through the origin.