Find All Replacements (Less Than the Modulus) for the Question

question 58

Multiple Choice

Find all replacements (less than the modulus) for the question mark that make the statement true.
-9 + ? ≡ 2 (mod 8)

• A) 2
• B) 1
• C) -1
• D)4

---

Definitions:

Extension Lines

Thin lines in technical drawing that extend from a dimension line to the feature being measured or noted.

Dimension Lines

Lines on a technical drawing that represent the measurement of an object’s length, width, or height.

Leaders

Lines in technical drawings that connect annotations or notes to specific features, usually with an arrowhead pointing to the feature of interest.

Curved Feature

A design element in a drawing or physical object that incorporates one or more curves, rather than straight lines exclusively.