Graphing Ratio Relationships

Write an equation for this situation.

• y = 9.75x

• y = 19.25x + 10

• y = 19.25x

• y = -19.25x

What is the unit rate for the rain fall?

• 2 cm per hour

• 1 cm per hour

• ¹/₂ cm per hour

• 4 cm per hour

Which of the equations below is proportional?

• y = 6x

• y = 3x + 2

• y = 2x + 4

• y = -2x -1

Which equation matches the given graph?

• y=0.45x

• y = ²/₅x

• y = 4x

• k = ¼

Does this graph represent a proportional relationship?

• Yes

• No

What qualities must a graph have in order for it to be proportional? (Select ALL that apply)

• Must cross through the Origin, point (0,0)

• Must always be positive

• Must be a line

• Must be a straight line; has to be linear

State whether the graph is proportional or non-proportional.

• Proportional

• Non-proportional

State whether the graph is proportional or non-proportional.

• Proportional

• Non-proportional

State whether the graph is proportional or non-proportional.

• Proportional

• Non-proportional

Which line represents a proportional relationship? (Select ALL that apply)

• Blue Line A

• Red Line B

• Green Line C