Representing Proportional Relationships with Graphs

Is this table proportional?

• Yes
• No

Is this graph proportional?

• Yes
• No

What makes a graph proportional?

• Linear
• The line is only in quadrant 1
• Curvy line
• Linear and the line goes through the origin

Which equation shows a NON-proportional relationship of x and y?

• y = 5x
• y = -5.6x
• y = x + 3
• y = 1/2x

What is the unit rate in this proportional relationship?

• 60 miles/1 hour
• 120 miles/ 2 hours
• 1 mile/ 1 hour

Which graph is proportional?

• A
• B
• C and D
• All of the graphs are proportional

Does the table represent a proportional relationship?

• Yes.
• No.

The graph represents the height of a burning candle.  What is the meaning of the slope?

• the time it takes to burn the entire candle
• the change in the height of the candle each hour it is burning
• the different heights of the candle
• the original height of the candle

Is the graph proportional or non proportional?

• proportional
• non proportional

Does the table represent a proportional relationship?

• Yes.
• No.