Equation of Proportionality

What does k represent in the equation y = kx?

• constant rate of change

• constant of proportionality

• the equation

• x/y

What is the formula for a proportional relationship?

• y=kx

• y=k/x

• z=ykx

• y=ky

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

• x

• y

• 1/2

• 2

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

• 10=kx

• 10=k

• y=10k

• y=10x

Identify the constant of proportionality.

• k = 2x

• k = 2

• k = 4

• none

What is the equation for this proportional relationship?

• y = 45x

• y = 15x

• y = 30x

• y = 20x

What equation represents the proportional relationship shown in this graph?

Which equation would math this proportional relationship?

• y = 45x

• y = 15x

• y = 30x

• y = 20x

Which equation matches the graph?

• y = 7x

• y = 42x

• y = 6x

• y = 2x

Is the relationship proportional, if so, what is the EQUATION for this table?

• y = 1/2x

• x = 1/2y

• y = 2x

• k = x

• Not proportional