Unit 4 assessment
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by Kari Ekblom
| 13 Questions
1
1
The table shows four states and the lowest elevation in each state. Order the states by their elevation from greatest to least.
State Lowest Elevation (ft)
Alabama Sea level
Arizona 72 ft
California -279 ft
Louisiana -8 ft
2
1
A diver is 25 feet below sea level. After he swims up 15 feet toward the surface, what is his elevation? What integer would represent sea level in this situation?
3
1
Determine whether the statement is true or false.
Mark all that are true
1. -5 > -1/2
2. 3 < - 3
3. – 4.5 > - 4.9
4. 9 > - 7
A
B
C
D
4
1
Plot and label each of the three elevations below on a vertical number line. Label each point with its numerical value.
1. A dolphin is at the surface of the ocean to breathe. What is the dolphin’s elevation?
2. The dolphin dives down 150 feet to feed. What is the dolphin’s elevation?
3. The dolphin jumps out of the water 10 feet. What is the dolphin’s elevation?
5
1
Plot the following points on a number line:
1. 2.5
2. The opposite of 3
3. The opposite of -1.5
4. -1/2
5. The opposite of 0
6
1
On the number line, plot and label all numbers with an absolute value of 5/2 .
7
1
Match the verbal expression with the mathematical statements.
1)The number is - 7 is a distance 7 units away from 0.
2)The number is 7 greater than the number -7
3)The numbers 7 and -7 are the same distance away from 0 on the number line.
4)The number -24 is further away from 0 than the number 4 on the number line.
5)The number -24 is less than the number 4

A)7 > - 7
B)|-24| > |4|
C)|-7| = 7
D)|7| = |- 7|
E) -24 < 4
8
1
James received and spent money in the following ways last month. Write a signed number to represent the change in money from his perspective.
1. His mom gave him \$10 for cleaning the car.
2. He earned \$45 for mowing the lawn.
3. He spent \$30 at the movie theater.
4. He loaned a friend \$5.
9
1
Label the coordinates on a graph :
1. (-4, 1)
2. (-2, -3)
3. (5, -3)
4. (2, 3)
10
1
The x-axis represents the number of hours before or after noon, and the y-axis represents the temperature in degrees Celsius.
1. At 9am, it was 5 degrees below zero. In what quadrant would this point be plotted?
2. At 2 pm, it was 15 degrees Celsius. In what quadrant would this point be plotted?
3. What does the point (0, 0) represent?
11
1
Each set of ordered pairs are connected to form a line segment. What is the length of each segment? What quadrant(s) is the segment found within?
1. M = (2, 4) and N = (2, 7)
2. P = (-4, 1) and R = (-4, -3)
3. S = (-3, -2) and T = (4, -2)
12
1
The coordinates of a rectangle are (2, 0), (2, -5), (-3, 0) and (-3, -5). What is the length and width of the rectangle?
What is the perimeter of the rectangle?
13
1

Draw a square with one vertex on (2, -2) and a perimeter of 16. Label each vertex with its coordinate.