6
Answer: DSet 3: Quadratic Equations (Advanced)
Explanation
PROBLEM
For the parabola y = 3(x - 8) squared + 4, what is the x-coordinate of the vertex?
For the parabola y = 3(x - 8) squared + 4, what is the x-coordinate of the vertex?
A.
6
B.
16
C.
7
D.✓ Correct
8
Detailed Explanation
Choice D is the best answer. In vertex form y = a(x - h) squared + k, the vertex is at (h, k). So x = 8
Why others are wrong:
A: 6 is incorrect because it does not satisfy the equation.
B: 16 is incorrect because it does not satisfy the equation.
C: 7 is incorrect because it does not satisfy the equation.