7th Practice Test 1

Graph each proportional relationship. Part A Jenny is making broccoli cheddar soup and her recipe calls for 2 1/4 cups of broccoli, x, for every 3/4 cup of cheddar cheese, y. Assume the situation is proportional. (Graph the relationship on the provided graph.)

• Plot the point (2.25, 0.75) and draw a straight line through the origin and this point.

• Plot the point (0.75, 2.25) and draw a straight line through the origin and this point.

• Plot the point (3, 1) and draw a straight line through the origin and this point.

• Plot the point (1, 3) and draw a straight line through the origin and this point.

Graph each proportional relationship. Part B y = 3x (Graph the relationship on the provided graph.)

• Plot points such as (0,0), (1,3), (2,6) and draw a straight line through them.

• Plot points such as (0,0), (1,2), (2,4) and draw a straight line through them.

• Plot points such as (0,0), (1,1), (2,2) and draw a straight line through them.

• Plot points such as (0,0), (1,4), (2,8) and draw a straight line through them.

Graph each proportional relationship. Part C x | y 3 | 2 6 | 4 9 | 6 (Graph the relationship on the provided graph.)

• Plot points (3,2), (6,4), (9,6) and draw a straight line through them.

• Plot points (2,3), (4,6), (6,9) and draw a straight line through them.

• Plot points (3,2), (6,3), (9,4) and draw a straight line through them.

• Plot points (2,3), (4,6), (6,8) and draw a straight line through them.

A carnival game uses a fair spinner with 16 sections. There are 2 white sections, 4 red sections, and 10 blue sections on the spinner. Part A Find the probability of each event. Express your answer as a fraction in simplest form.

• P(blue) = 10/16 = 5/8 P(green) = 0/16 = 0 P(red) = 4/16 = 1/4

• P(blue) = 8/16 = 1/2 P(green) = 2/16 = 1/8 P(red) = 6/16 = 3/8

• P(blue) = 4/16 = 1/4 P(green) = 2/16 = 1/8 P(red) = 10/16 = 5/8

• P(blue) = 2/16 = 1/8 P(green) = 4/16 = 1/4 P(red) = 10/16 = 5/8

A carnival game uses a fair spinner with 16 sections. There are 2 white sections, 4 red sections, and 10 blue sections on the spinner. Match each probability with the correct description of its likelihood.

• likely

• likely

• unlikely

• certain

• certain

• impossible

• impossible

• unlikely

Is there a proportional relationship between (a)   and (b)   in the table? Complete a true statement.

x | 2 | 6 | 8 | 10

y | 6 | 18 | 24 | 30

The relationship (c)   proportional because all the ratios y/x (d)   equivalent.

• Yes

• No

• Not sure

Are the expressions -1/4(3.2b + 2.4) and -0.8b - 0.6 equivalent?

• yes

• no

Alisa needs 4.65 feet of fencing to complete the fence she is building. She has a piece of fencing that is 4 5/6 ft long. Does she have enough fencing? Complete a true statement.

• 0.6

• 4.83

• 0.83

• has

• 0.5

On a scale drawing of a soccer field, 0.5 cm equals 8 m. If the drawing has dimensions 6.5 cm x 3.25 cm, what is the actual length of the soccer field, in meters?

• 104 meters (6.5 cm x 8 m / 0.5 cm = 104 m)

• 52 meters

• 26 meters

• 13 meters

Add the expression (4x – 11) + (10 – 2 5/6 x). Use the numbers in the box to complete the answer.

• x + (–1)

• 2x + 1

• 6x – 21

• –x + 1