Name:______Date:______

8th Grade Semester Exam Review – 2016 - 2017

  1. Circle YES if a function is represented and NO if a function is not represented. If you circle NO, explain why the representation is not a function.
  1. What is rounded to the nearest tenth?
  1. Correctly label the Venn diagram below to show the relationship between the subsets of real numbers.
  1. Using the scatterplots below, label each graph with the appropriate correlation (positive, negative, or no correlation).

______

______

  1. What is the solution to the system of equations graphed below? ______

  1. Write an inequality for each one of the 3 problems below.

Pool A contains 10 gallons of water and begins to fill at the rate of 6.25 gallons per minute. Pool B is empty and begins to fill at a rate of 12.25 gallons per minute. Bill wants to know the time when Pool A has at least as much water in it as Pool B.

Inequality ______

Greg is in charge of buying books for some children at a shelter. He can order them onlinefor $6.25 per copy and pay a shipping fee of $10. He can also buy the same book at abookstore for $12.25 per copy and avoid the shipping fee. He wants to know how many copieshe needs to buy so that the bookstore is less expensive than ordering online.

Inequality ______

A membership at Jeremy's Gym costs $6.25, plus $10 per month. A membership atJoe's Gym costs $12.25 per month. Zach wants to know how many months he needs to bea member so that the cost at Jeremy's Gym is no more than the cost of Joe's Gym.

Inequality ______

  1. Which relation is a function?

A / Input / Output / B / Input / Output
9 / 3 / 6 / 2
7 / 3 / 5 / 4
8 / 5 / 4 / 6
9 / 5 / 6 / 8
C / Input / Output / D / Input / Output
3 / 1 / 5 / 10
3 / 2 / 6 / 10
5 / 3 / 7 / 14
5 / 4 / 8 / 14
  1. Order the following numbers from least to greatest.

, 8.25 , 3π ,

______

  1. The equation 6x + 5 = 5x + 8 is modeled below.

What value of x makes this equation true?

  1. Which is the equation for the values in the table?

X / -20 / -10 / 10 / 20
Y / -12 / -7 / 3 / 8

A

B

C

D

  1. The scatterplot below shows the secondary schools in Pearland with different numbers of clubs,and their average weekly attendance.

Based on the trend in the scatterplot, approximately how many people will attend clubs at a school with 16 clubs?

A530

B490

C420

D370

  1. Rob is wanting to buy wrapping paper for his community center. Easywrap charges $9.50 per roll, and has free shipping. Wrapping Designs charges $6.50 per roll, plus a shipping fee of $9. Write an equation to show when the total cost of wrapping paper would be the same at both stores. (Use the letter r to represent the number of rolls.)
  1. Which of the following tables below shows a proportional relationship?

A / 3 / 9 / B / 4 / 24
6 / 14 / 6 / 36
9 / 30 / 8 / 48
12 / 42 / 12 / 72
C / 2 / 10 / D / 3 / 15
3 / 15 / 6 / 22
4 / 20 / 9 / 30
6 / 25 / 12 / 45
  1. Look at the graph below.

If the rain continues at the same rate, how many millimeters of rain will have fallen after 10 hours?

  1. A water park charges guests $25.75 a day to rent 5 inner tubes. Write an expressionto show how to determine the charge for renting 12 inner tubesfor 1 day at the water park?
  1. Which of these lines has a slope of 2?

A B

C D

  1. In an equation, y varies directly with x. If x = 8 when y = 17, what is the value of x when y = 85?

A45

B40

C38

D32

  1. Write an equation that best describes the relationship between x and y in the table below.

X / Y
0 / 3
8 / 5
16 / 7
24 / 9

Equation: ______

  1. Using the graph below, state whether each statement is true or false.

AThe simplified ratio of the vertical side length to the horizontal side length of each triangle is True or False

BThe smaller triangle and the larger triangle are congruent. True or False

CThe slope of the line is True or False

  1. Carl and Betty collected data on the number of shoppers at their favorite store on days with percent off sales. They each made a scatterplot of the data.

List two conclusions Carl and Betty can make based on the data shown.

1)______

2)______

  1. Circle YES if a situation represents a proportional relationship and NO if a situation does not represent a proportional relationship. If you circle NO, explain why the situation does not represent a proportional relationship.

1)A job at a coffee shop paying $15.25 an hour. YES or NO

2)The cost of purchasing apples that are $1.69 per pound with a coupon for $1 off the total cost. YES or NO

3)Bobby has 13 more freckles than his sister Abigail. YES or NO

4)At a farm stand, each basket of cherries costs $3.75 per pound plus $2.00 for the basket. YES or NO

5)For every 5 minutes you bicycle, you burn 45 calories. YES or NO

6)A shipment of gumballs cost $0.86 per pound plus a shipment of $0.24 per pound.

YES or NO

  1. A block of cheddar cheese is on sale for $0.50 per pound. Which graph has a slope that best represents the price per pound of cheddar cheese?

AB

CD

  1. Harry is doing a traffic survey. He records the speeds of cars passing through two different intersections. What is the mean absolute deviation of the data in the table?

Intersection (miles per hour) / 25 / 26 / 26 / 28 / 28 / 30 / 30 / 31 / 32 / 34
  1. What is the standard form of the expression ? ______

Which expression equals 0.0100 in scientific notation? ______

Which expression equals $6 million in scientific notation? ______

What is the standard form of ? ______

  1. What is the equation of each line shown on the graphs below?

1) Equation - ______

2) Equation - ______

3) Equation - ______