Constant of Proportionality on a Graph

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

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

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

What is the constant of proportionality of the graph above?

• 16

• 1/16

• 1

• None of the above

What is the constant of proportionality?

• 4

• 12

• 3

• 1/3

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

• y = 1/2x

• x = 1/2y

• y = 2x

• k = x

Identify the constant of proportionality.

• k = 2x

• k = 2

• k = 4

• none (not proportional)

k represents

• the constant of proportionality

• the constant of scientific notation

• the constant of inequalities

• the constant of variables

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

• y = 33x

• y = 0.003x

• x = 33y

• 33k

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

• 15k

• x = 15y

• y = 0.06x

• y = 15x

A proportional relationship can be written as an equation in the form ____ = _____  _____

• y = k+x

• y = k-x

• y = kx

• y = k/x

What makes a graph proportional?

• Straight line

• The line goes through the origin

• Curvy line

• Straight line and the line goes through the origin