Question 11 • CMS 2026-2027 NC Math 1 CREDIT RECOVERY
The axis of symmetry for a quadratic equation can be found using the formula x is equal to negative b over 2 a , where A and b are coefficients in the quadratic equation and x represents the values along a vertical line on the coordinate plane. What is the equation when solved for A ?
Answer
A
a is equal to negative b over 2 x
B
a is equal to b over 2 x
C
a is equal to 1 half b x
D
a is equal to negative 1 half b x
Explanation
Start with x = −b/(2a). Multiply both sides by 2a to get 2ax = −b, then divide by 2x: a = −b/(2x). This matches choice A, “a is equal to negative b over 2 x.”
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