Graphing Proportionality

What does the point (2,6) represent? *remember y per x

• 6 cans per 2 tennis balls

• 2 tennis balls per 6 cans

• 6 tennis balls per 2 cans

• 2 cans per 6 tennis balls

How would I write the coordinate pair that is plotted on the graph?

• (30,2)

• (2,30)

What is the constant of Proportionality for this graph?

K=

• $\frac{1}{15}$

• 15

• 60

• 30

If Marco bikes for 10 hours total, how many miles did he travel? (y=kx)

• 15

• 100

• 150

• 60

How would I write the points of the coordinate pair from the graph?

• (4,80)

• (80,4)

What is the constant of proportionality of this graph?

 $\frac{y}{x}=k$  

• 240

•  $\frac{1}{4}$  

• 20

• 4

If this person works for 9 hours next week how much will she earn?

y=kx

• 120

• 100

• 160

• 180

Which graph shows a proportional relationship?

• A

• B

Which graph shows a proportional relationship?

• A

• B

The two ways to tell if a graph is proportional is

• If it has a straight line AND labels

• If it has a straight line AND passes through 0,0

• It passes through 0,0 and has labels

• It passes through 0,0 and has a title