Revisiting Proportional Relationships

Are the following ratios proportional?
3/4, 36/40

• yes

• no

Are the following ratios proportional?
8/10, 28/35

• yes

• no

Are the following ratios proportional?
21/30, 56/80

• yes

• no

What is the constant of proportionality?

• X $3

• X $4

• X $2

• X $9

Is this table Proportional?

• Yes, because the COP is different each time.

• Yes, because the COP is always X9.

• No, because the numbers are all different.

• No, because the COP changes each time.

Is this table proportional or non-proportional?

• Proportional

• Non-Proportional

What is the unit rate/constant of proportionality?

• 80 miles in 1 hours

• 20 miles in 1 hours

• 40 miles in 1 hours

• 160 miles in 1 hours

Find the constant of proportionality on this table of values.

• k=3

• k=1

• k=0

• k=4

What makes a graph proportional?

• Straight Line

• The line goes through (0,0)

• Curvy line

• Straight line and passes through (0,0)

In the equation y = 14x, what is the constant of proportionality?

• y

• x

• 14

• y=14