+Name:______

*I Can Statements*

Unit 3: Slope

I Can Statement / Question Numbers / Pre-Test # Correct / Question Numbers / Post-Test # Correct / Mastered / Pro-Ohio Test #
F4 /
  • 8.F.4: I can construct a function to model a linear relationship. I can determine rate of change and initial value from various representations and contexts.
/ 1,2,3,4 / ___/4 / 1,2,3,4 / ___/4
EE5 /
  • 8.EE.5: I can graph proportional relationships. I can interpret unit rate as the slope of the graph.
/ 5,6,7,8 / ___/4 / 5,6,7,8, 11 / ___/6
EE6 /
  • 8.EE.6: I can use similar triangles to explain why the slope is the same between any two points on a non-vertical line in the coordinate plane.
/ 9, 10 / ___/2 / 9, 10, 11 / ___/6
Pre-Assessment / ____/10 / ______%
Post-Assessment / ____/16 / ______%
Percent of Increase or Decrease: ______%

Name:______Score:_____/16

Sliding Through Slopes Pre-Test

1. Sara starts with $80 a week and spends $10 per week. Which graph shows this?

2. Darcy pulls the plug in the bathtub. The amount of water, in gallons, left in the tub overtime is shown in the graph provided. Which of the following statements are true?

A) The slope of the line is 5.
B) The graph is a linear relationship.
C) 8 represents the y-intercept/initial value
D) As the time increases, the amount of water increases.

X / Y
-3 / 7
-2 /
4
-1 / 1

3. Identify the correct equation in slope-intercept form for the table on the right.
A. C.
B. D.

4. Based on this graph, what is the
equation for the line shown?
A. C.
B. D.

5. Which letter represents two slopes that are equivalent?

  1. 2/3 and 4/9B. 10/20 and 2/4C. 1/2 and 2/1D. -3/4 and -3/8

6. Lisa and Ashton disagreed on the slope of the line on the right. Lisa said the slope was 2 and Ashton said it was 4/2. Who is correct?

A. Lisa

B. Ashton

C. Both are correct.

D. Neither is correct.

7. Find the slope of a line that contains the following pair of points:(-1,5) and (2,7)
A. C.
B. D.

8. Below are two scenarios, which description is true?

  1. Scenarios 1 has a rate that is greater than scenario 2
  2. Scenario 2 cannot be compared because it is not in a graph.
  3. Scenario 2 has a rate that is greater than scenario 1.

1

9. Explain why ∆ACB is similar to ∆DFE and deduce that AB has the

same slope as BE . Choose the BEST answer.

  1. ABC is similar to DFE because they both lie on the same line
  2. ABC is similar to DFE because they both share a proportional slope.
  3. ABC is similar to DFE because they are both triangles

10.

11. The linear equation, y = 1/2x – 2 is shown on the graph. If the equation changes toy = 3x – 2, describe the differences to the original graph and sketch the new graph in your Answer Document. (2 points)

12. Graph the equation y = 2x – 1 on your answer document. Once graphed, show two different slope triangles for the line. Label the two triangles as ABC and DEF. Finally describe and prove how these two triangles are similar by using their slopes as an example. (4 Points)

1

Name:______Period:______Score:____/16

Unit 3 Post-Assessment  Slope

Answer Document

11. Please Answer #11 below:Score:____/2

Explanation:

12. Please Answer #12 below:Score:____/4

Explanation:

1