Constant of Proportionality

Front

What is the constant of proportionality?

Back

The constant of proportionality is the constant value (k) that relates two proportional quantities, expressed in the form y = kx.

Front

What makes a graph proportional?

Back

A graph is proportional if it is a straight line that passes through the origin.

Front

How do you find the constant of proportionality from a graph?

Back

To find the constant of proportionality from a graph, pick a point on the line and use the formula y/x.

Front

What is the formula for a proportional relationship?

Back

The formula for a proportional relationship is y = kx, where k is the constant of proportionality.

Front

If y = 15x, what is the constant of proportionality?

Back

The constant of proportionality is 15.

Front

Is the relationship represented by the table proportional? Yes or No?

Back

Yes, if the ratio of y to x is constant.

Front

If k = 2, what is the equation of the proportional relationship?

Back

The equation is y = 2x.

Front

What does it mean if a relationship is not proportional?

Back

If a relationship is not proportional, the ratio of y to x is not constant.

Front

How can you tell if a table represents a proportional relationship?

Back

A table represents a proportional relationship if the ratios of corresponding values are equal.

Front

What is the constant of proportionality if y = 3 when x = 1?

Back

The constant of proportionality is 3.