8
lesson pretestMultiple Choice

Pretest

Question 8 • CMS 2026-2027 NC Math 1 CREDIT RECOVERY

Which statements about the graph of the function f of x is equal to negative x squared minus 4 x plus 2 are true? Choose three correct answers.

Answer
A
The domain is start set x such that x is less than or equal to negative 2 end set .
B
The function is increasing over the interval negative infinity comma negative 2 .
C
The range is start set y such that y is less than or equal to 6 end set .
D
The function is decreasing over the interval negative 4 comma infinity .
E
The function has a positive y -intercept.

Explanation

Rewrite the function as f(x) = −(x + 2)² + 6. Its graph opens downward and has a maximum at (−2, 6), so it increases for x < −2 and decreases for x > −2. Therefore, B is true and the range is y ≤ 6, making D true. The y-intercept is f(0) = 2, which is positive, so E is true.

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