Use a graph to tell whether x and y are in a proportional relationship.

x 3 6 9

y 1 2 3

Ch. 5 Review: Name __________________

Create a table for the following graph. Fill in all 4 rows.

x y

Period: B___, G___ Date _________________

Boxes 5 10 15

Cost $3.65 $7.30 $10.95

Use the ratio table to find the unit rate with the specified units.

cost per box

Use a graph to tell whether x and y are in a proportional relationship.

x 1 3 4

y 2 6 7

a) -8 – (-8)

b) (-½) + (-¾)

Solve.

y 2x

Create a table for the following equation.

x y

Use the ratio table to find the unit rate with the specified units.

Miles per gallon

Gallons 0 3 6 9

Miles 0 85.5 171 256.5

Solve this equation.

x5 15

4

Does the graph below represent a proportional relationship? Explain how you know.

# of batches Cups of flour used

8 12

14 21

24 36

60 90

Jimmy has a bakery. The table below shows the amount of flour used for a number of batches of cupcakes. Write an equation (if possible) for this data.

What point represents the unit rate on the graph?

Days

Pie

ces o

f G

um ( ______, _______)

What is the constant of proportionality for this graph?

The table shows the different rates to ship books through the mail. Are the rates proportional? How do you know?

Pounds (x) Cost (y)

2 $19.16

8 $76.64

15 $143.70

a) What does the point (8,28)

represent?

b) What is the

unit rate for the

balloon rising?

Graph the line that passes through the two points. Then find the constant of proportionality.

(2,1) and (6,3)

Graph the following table. Are the two quantities proportional?

Graph the equation:

1y x3

Billy Bob Joe earned 48 points of extra credit with 8 extra credit assignments. Find the unit rate.

The table shows the rates for buying songs to download. Are the rates proportional? Justify with math.

songs (x) Cost (y)

30 $25

55 $40

100 $82

Mr. August went fishing and he was hoping to catch fish

at the following rate:

a) Write a verbal expression describing this rate.

b) Graph the equation. Make sure you label your graph!!

x is the # of days spent fishing

y is the total number of fish caught

y = 4x

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