Constant of Proportionality

Front

What does the 'k' represent in the equation y = kx?

Back

The constant of proportionality.

Front

If Joshua types 84 words in 4 minutes, what is the constant of proportionality, k, in words per minute?

Back

k = 21

Front

If Kahory drives 164 miles in 4 hours, what is the constant of proportionality, k, in miles per hour?

Back

k = 41

Front

What is the constant of proportionality, k, that relates y to x if k = 9?

Back

k = 9

Front

What is the constant of proportionality, k, that relates y to x if k = 2?

Back

k = 2

Front

Define 'constant of proportionality'.

Back

A constant ratio between two variables that are directly proportional.

Front

How do you find the constant of proportionality in a direct variation problem?

Back

Divide the dependent variable by the independent variable.

Front

If y = 12 when x = 3, what is the constant of proportionality, k?

Back

k = 4

Front

If y = 30 when x = 5, what is the constant of proportionality, k?

Back

k = 6

Front

What is the relationship between the constant of proportionality and the slope of a line?

Back

The constant of proportionality is the slope of the line in a graph of y vs. x.