Which of the following graphs is described by the function given below?
y = 2x^2 + 8x +3
2 answers:
Answer:
A
Step-by-step explanation:
y = 2x² + 8x + 3
Complete the square:
y = 2(x² + 4x) + 3
y = 2(x² + 4x + 4) + 3 - 2(4)
y = 2(x + 2)² - 5
So the vertex is at (-2, -5). The graph must be Graph A.
Answer:
The answer is Graph (A.)
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