Linear Equations for Proportional Relationships

Using the graph above, determine the constant of proportionality.

• 0

• 1

• 3

• 6

The graph above shows the price of games in dollars.  Is the graph proportional and how do you know?

• The graph is proportional  because it is linear.

• The graph is proportional because it is linear and passes through the origin.

• The graph is not proportional because it does not pass through the origin.

• The graph is not proportional because it is not linear and it does not pass through the origin.

What is the equation of the line shown on the graph?

• y = 96x + 1

• y = 45x

• y = 47x

• y = 94x + 5

Which of the following rates of change represents the graph shown?

• 2 boys for every 1 girl

• 0.5 boys for every 1 girl

• 6 boys for every 1 girl

• 3 boys for every 1 girl

Which equation shows how much rain falls per hour?

• y = 2x

• y = 3x + 1

• y = -2x

• y = -3x + 1

What is the equation for the graph?

• y = 46x

• y = 46x - 5

• y = 92x

• x = 92y

Write an equation for this situation.

• y = 9.75x

• y = 19.25x + 10

• y = 19.25x

• y = -19.25x

Which of the equations below is proportional?

• y = 6x

• y = 3x + 2

• y = 2x + 4

• y = -2x -1

Is this graph proportional?

• Yes

• No

Which equation matches the given graph?

• y=0.45x

• y = ²/₅x

• y = 4x

• k = ¼