What is the vertex of y = −2x2 – 4x – 5?
Question
What is the vertex of y = −2x2 – 4x – 5?
Solution
The vertex of a parabola given by the equation y = ax^2 + bx + c is given by the point (h, k), where h = -b/2a and k = c - b^2/4a.
In the equation y = -2x^2 - 4x - 5, a = -2, b = -4, and c = -5.
Step 1: Calculate h h = -b/2a = -(-4)/2*(-2) = 4/-4 = -1
Step 2: Calculate k k = c - b^2/4a = -5 - (-4)^2/4*(-2) = -5 - 16/-4 = -5 + 4 = -1
So, the vertex of the parabola y = -2x^2 - 4x - 5 is (-1, -1).
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