Constant of Proportionality

Constant of Proportionality

By Alexis Glover

How to tell if a Graph is Proportional?

Multiple Choice

Is the graph proportional?

• Yes

• No

Multiple Choice

Is the graph proportional?

• Yes

• No

Multiple Choice

Is the graph proportional?

• Yes

• No

​Constant of Proportionality Equation

​​y = k x

where "k" is the constant of proportionality​

​y = 3x

​3 is the C.O.P.

Multiple Choice

What does k represent in the equation y = kx?

• constant rate of change
• constant of proportionality
• the equation
• x/y

Multiple Choice

What is the formula for a proportional relationship?

• y=kx

• y=k/x

• z=ykx

• y=ky

Multiple Choice

In the equation y = 14x, what is the constant of proportionality?

• y

• x

• 14

Multiple Choice

The constant of proportionality in the equation y = ½x is _______. 

• x

• y

• 1/2

• 2

Multiple Choice

If the constant of proportionality is 10, which of the following is the correct proportional equation?

• 10=kx

• 10=k

• y=10k

• y=10x

Multiple Choice

What is the EQUATION for this graph?

• y=80x

• y=20x

• y=40x

• y=160x

Multiple Choice

What is the equation for this graph?

• y=1/15x

• y=2x

• y=30x

• y=15x

Multiple Choice

Identify the constant of proportionality.

• k = 2

• k = 4

• k = 1/2

• k = 1/4

• none (not proportional)

Multiple Choice

Which equation is NOT proportional?

• y = 2x - 3

• y = 150x

• y = 1/2x

​Constant of Proportionality from a table?

Must Divide ** y ➗​ x **

Multiple Choice

Determine the constant of proportionality for the table. Express your answer as y = kx

• y = 1/2x

• x = 1/2y

• y = 2x

• k = x

Multiple Choice

Does the table represent a proportional relationship?

• Yes.

• No.

Multiple Choice

Is the given table a proportional relationship? If so, what is the constant?

• Yes; 1/3

• Yes; 3

• Yes; 5

• No

Multiple Choice

What is the constant of proportionality for this table?

• $1/9 per hour

• $9 per hour

• $8 per hour