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Delaware State Assessments · DeSSA · Math · Grade 8

Delaware Grade 8 DeSSA Math Practice Test

Build Grade 8 Delaware DeSSA Math readiness with five focused 10-question practice sets covering rational numbers, algebra, functions, geometry, statistics, probability, and problem solving.

Grade 8 DeSSA Math practice sets

This Delaware Grade 8 DeSSA Math Practice Test page provides five short practice sets with 10 original multiple-choice questions each. The sets cover rational numbers, expressions, equations, functions, geometry, measurement, statistics, probability, and integrated problem solving.

Skills covered

  • Rational numbers, exponent rules, square roots, scientific notation, equivalent expressions, equations, inequalities, ratios, and unit rates
  • Function evaluation, slope, linear equations, intercepts, systems, graphs, relations, proportional functions, and comparing representations
  • Angle relationships, triangles, the Pythagorean theorem, volume, similarity, circles, trapezoids, transformations, parallel lines, and distance
  • Mean, median, range, sampling, probability, associations, interquartile range, graph scales, and outliers
  • Grade 8 review tasks combining decimals, percent change, function machines, perimeter, probability, residuals, sequences, volume, and representative samples

How to use this page

Complete one 10-question set at a time. Write down the operation or representation you used, check units and signs, and review the explanation after each response.

This is supplemental State Test Practice, State Assessment Practice, and Standardized Test Practice. It does not replace current Delaware Department of Education guidance, official DeSSA materials, accommodations, or testing policies.

For the Delaware assessment hub, visit Delaware State Assessments.

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2. Test

Delaware Grade 8 DeSSA Math Practice Questions

A 10-question Delaware Grade 8 DeSSA Math practice set on linear equations and functions, with answers and explanations.

Read each problem carefully, choose one answer, and review the explanation after responding.

10 Questions
0/10 Questions0 %
Correct 0
Incorrect 0
Unanswered 10
1. QuestionMultiple choice

For the function y equals 3x plus 2, what is y when x equals 4?

Please select an answer first.

Correct answer: A

The correct answer is 14.

  1. Identify the structure: Read the quantities, relationships, diagram information, table, or equation before choosing an operation.
  2. Show the reasoning: Substitute 4 for x: 3 times 4 plus 2 equals 14.
  3. Check the result: Confirm that the answer is reasonable and matches the Delaware Grade 8 DeSSA Math task.

Substitute 4 for x: 3 times 4 plus 2 equals 14.

2. QuestionMultiple choice

What is the slope of the line through (1, 3) and (5, 11)?

Please select an answer first.

Correct answer: B

The correct answer is 1.

  1. Identify the structure: Read the quantities, relationships, diagram information, table, or equation before choosing an operation.
  2. Show the reasoning: The change in y is 8 and the change in x is 4, so the slope is 8 divided by 4, or 2.
  3. Check the result: Confirm that the answer is reasonable and matches the Delaware Grade 8 DeSSA Math task.

The change in y is 8 and the change in x is 4, so the slope is 8 divided by 4, or 2.

3. QuestionMultiple choice

What is the slope of the line y equals negative 2x plus 6?

Please select an answer first.

Correct answer: C

The correct answer is 6.

  1. Identify the structure: Read the quantities, relationships, diagram information, table, or equation before choosing an operation.
  2. Show the reasoning: In slope-intercept form y equals mx plus b, the coefficient of x is the slope, so m equals negative 2.
  3. Check the result: Confirm that the answer is reasonable and matches the Delaware Grade 8 DeSSA Math task.

In slope-intercept form y equals mx plus b, the coefficient of x is the slope, so m equals negative 2.

4. QuestionMultiple choice

A table has x-values 0, 1, and 2 and y-values 5, 8, and 11. Which equation represents the relationship?

Please select an answer first.

Correct answer: D

The correct answer is y equals 2x plus 5.

  1. Identify the structure: Read the quantities, relationships, diagram information, table, or equation before choosing an operation.
  2. Show the reasoning: The y-values increase by 3 each time and begin at 5, giving y equals 3x plus 5.
  3. Check the result: Confirm that the answer is reasonable and matches the Delaware Grade 8 DeSSA Math task.

The y-values increase by 3 each time and begin at 5, giving y equals 3x plus 5.

5. QuestionMultiple choice

What is the x-intercept of the line 2x plus y equals 8?

Please select an answer first.

Correct answer: A

The correct answer is 4.

  1. Identify the structure: Read the quantities, relationships, diagram information, table, or equation before choosing an operation.
  2. Show the reasoning: At the x-intercept y is zero, so 2x equals 8 and x equals 4.
  3. Check the result: Confirm that the answer is reasonable and matches the Delaware Grade 8 DeSSA Math task.

At the x-intercept y is zero, so 2x equals 8 and x equals 4.

6. QuestionMultiple choice

What is the solution to the system x plus y equals 10 and x minus y equals 2?

Please select an answer first.

Correct answer: B

The correct answer is (6, 4).

  1. Identify the structure: Read the quantities, relationships, diagram information, table, or equation before choosing an operation.
  2. Show the reasoning: Adding the equations gives 2x equals 12, so x equals 6; substituting gives y equals 4.
  3. Check the result: Confirm that the answer is reasonable and matches the Delaware Grade 8 DeSSA Math task.

Adding the equations gives 2x equals 12, so x equals 6; substituting gives y equals 4.

7. QuestionMultiple choice

A linear graph rises 4 units when x increases by 1 and crosses the y-axis at negative 1. Which equation represents it?

Please select an answer first.

Correct answer: C

The correct answer is y equals x minus 4.

  1. Identify the structure: Read the quantities, relationships, diagram information, table, or equation before choosing an operation.
  2. Show the reasoning: The slope is 4 and the y-intercept is negative 1, so the equation is y equals 4x minus 1.
  3. Check the result: Confirm that the answer is reasonable and matches the Delaware Grade 8 DeSSA Math task.

The slope is 4 and the y-intercept is negative 1, so the equation is y equals 4x minus 1.

8. QuestionMultiple choice

Which relation is not a function?

Please select an answer first.

Correct answer: D

The correct answer is {(1, 4), (2, 4), (3, 4)}.

  1. Identify the structure: Read the quantities, relationships, diagram information, table, or equation before choosing an operation.
  2. Show the reasoning: The last relation assigns two different outputs, 4 and 6, to the input 1.
  3. Check the result: Confirm that the answer is reasonable and matches the Delaware Grade 8 DeSSA Math task.

The last relation assigns two different outputs, 4 and 6, to the input 1.

9. QuestionMultiple choice

A proportional relationship is y equals 2.5x. What is y when x equals 6?

Please select an answer first.

Correct answer: A

The correct answer is 15.

  1. Identify the structure: Read the quantities, relationships, diagram information, table, or equation before choosing an operation.
  2. Show the reasoning: Multiply the constant of proportionality by x: 2.5 times 6 equals 15.
  3. Check the result: Confirm that the answer is reasonable and matches the Delaware Grade 8 DeSSA Math task.

Multiply the constant of proportionality by x: 2.5 times 6 equals 15.

10. QuestionMultiple choice

A table has points (1, 4), (2, 7), and (3, 10). Compared with y equals 2x plus 1, which statement is true?

Please select an answer first.

Correct answer: B

The correct answer is The table has a smaller slope..

  1. Identify the structure: Read the quantities, relationships, diagram information, table, or equation before choosing an operation.
  2. Show the reasoning: The table increases by 3 per x while the equation increases by 2, so the table has the greater slope.
  3. Check the result: Confirm that the answer is reasonable and matches the Delaware Grade 8 DeSSA Math task.

The table increases by 3 per x while the equation increases by 2, so the table has the greater slope.

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Frequently asked questions about Delaware Grade 8 DeSSA Math Practice

Which grade is covered?

This page is organized for Grade 8 Delaware DeSSA Math practice, with algebra, functions, geometry, statistics, probability, and problem-solving tasks.

How many questions are included?

There are five practice sets with 10 questions each, for 50 questions in total. Each set can be completed separately.

Are these official DeSSA questions?

No. These are original supplemental practice questions. Check the latest Delaware Department of Education and official DeSSA information for current materials, accommodations, and policies.