Express the Interval in Set Builder Notation and Graph the Interval

question 7

Multiple Choice

Express the interval in set builder notation and graph the interval on a number line.
- $( - 9,4 )$

• A) \(\{ x \mid - 9 \leq x \leq 4 \}\)
• B) \(\{ x \mid - 9 < x < 4 \}\)
• C) \(\{ x \mid - 9 < x \leq 4 \}\)
• D) \(\{ x \mid - 9 \leq x < 4 \}\)

---

Definitions:

Fraternal Twins

Siblings born at the same time but are the result of two different eggs fertilized by two different sperm, sharing about 50% of their DNA, similar to ordinary siblings.

Eysenck

A psychologist known for his work in the fields of personality, behavior genetics, and the biological basis of intelligence.

Extraversion-Introversion

A personality dimension that characterizes individuals on a continuum from outgoing and energy-gathering from external sources (extraversion) to quiet and energy-gathering from internal sources (introversion).

Autonomic Reactivity

The degree to which the autonomic nervous system responds to stress or emotional stimuli, affecting heart rate, breathing, and other involuntary functions.