Constant of Proportionality

Front

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

Back

Pick a point on the line and use the formula y/x.

Tags

CCSS.7.RP.A.2B

Front

What is the constant of proportionality?

Back

The constant of proportionality is a constant ratio between two variables, often represented as k.

Tags

CCSS.7.RP.A.2B

Front

What does k represent in proportional relationships?

Back

k represents the constant of proportionality.

Tags

CCSS.7.RP.A.2B

Front

How do you write the equation for a proportional table?

Back

Find k and plug it into the equation y = kx.

Tags

CCSS.7.RP.A.2C

Front

How do you find the constant of proportionality for an equation?

Back

The constant of proportionality is the number in front of x.

Tags

CCSS.7.RP.A.2B

Front

What is the formula for finding the constant of proportionality?

Back

The formula is k = y/x.

Tags

CCSS.7.RP.A.2B

Front

If y = 45x, what is the constant of proportionality?

Back

The constant of proportionality is 45.

Tags

CCSS.7.RP.A.2B

Front

In a proportional relationship, if x doubles, what happens to y?

Back

y also doubles.

Tags

CCSS.7.RP.A.2D

Front

What is the graphical representation of a proportional relationship?

Back

A straight line that passes through the origin.

Tags

CCSS.7.RP.A.2D

Front

If the constant of proportionality is 2, what is the value of y when x is 5?

Back

y = 2 * 5 = 10.

Tags

CCSS.7.RP.A.2B