Proportional Graph Equations

Write an equation for this situation.

• y=9.75x

• y=19x

• y=19.25x

• y=9.5x

Does the equation show a proportional relationship?

• Yes

• No

Why does this graph show a non-proportional relationship?

• Because it is proportional

• It goes through the origin

• It does not go through the origin

• It is a straight line

Which graph is proportional?

• A

• B

• C and D

• All of the graphs are proportional

Which best describes the equation?
y = 75x

• Proportional

• Nonproportional

Is the graph proportional?

• Yes

• No

Which of the equations below is proportional?

• y = 6x

• y = 3x + 2

• y = 2x + 4

• y = -2x -1

Is the graph proportional?

• Yes

• No

Which graph is non-proportional?

• A

• B

• C

• D

Why does this graph show a non-proportional relationship?

• Because it is proportional

• It goes through the origin

• It does not go through the origin

• It is a straight line