Ratios and Proportions

Which ratios are equivalent:

 $\frac{2}{5}$   $\frac{12}{15}$   $\frac{20}{30}$   $\frac{14}{35}$  

•  $\frac{12}{15}$  and  $\frac{14}{35}$  

•  $\frac{2}{5}$  and  $\frac{20}{30}$  

•  $\frac{14}{35}$  and  $\frac{2}{5}$  

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

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 graph is proportional?

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

Does this graph represent a proportional relationship?  

• No, because it doesn't pass through the origin.
• Yes, because it doesn't pass through the origin.
• Yes, because it intersects the y axis.
• No, because it intersects the x axis.

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