Proportional Relationships Review!

Proportional Relationships Review!

Learning Target: I can review how to find the constant from proportional graphs, equations, and tables by reaching mastery on a test.

Which equation represents the table?

• Remember x comes first when looking at a table

• Remember to find the constant using 

   $y\div x$  

• Remember all proportional equations use y=kx and k is the constant 

• Replace the letter k with your constant

Multiple Choice

Which equation would match this proportional relationship?

• y = 45x

• y = 30x

• y = 15x

• y = -45x

Does this graph show a proportional relationship?

• Proportional graphs have points that create straight lines

• Proportional graphs go through the origin or (0,0)

Multiple Choice

Which graph shows a proportional relationship?

• A

• B

• C

• D

Identify the constant

• Remember

   $y\ \div x$  is how you find the constant 

• 
  

Multiple Choice

Create an equation for this proportional relationship. 

• y = 10x
• y = 5x
• k = 5
• y = 0.5x

Ann rode her bike at a constant speed. She rode 1 mile in 7 minutes. Write an equation for minutes per mile.

• Find the unit rate, per means divide

• Equation should use y = kx

Multiple Choice

Bailey rode her bike at a constant speed. She rode 1 mile in 5 minutes. Write an equation for minutes per mile.

• y = 0.5x

• y = 0.2x

• y = 10x

• y = 5x

What does the point (4,2) mean?

• Read the labels for the x and y axis

• X is at the bottom and Y is on the side

• All points have an (X, Y) - the first number is X and the second number is Y

• There are 4 jam jars for every 2 cups of sugar

Multiple Choice

Ordered pair (0,0) is also known as the ___.

• y-axis
• x-axis
• origin

Multiple Choice

How do you write an ordered pair?

• (X,X)
• (Y,X)
• (X,Y)
• (Y,Y)

Open Ended

What does the point (6,4) mean on the graph?