Q. Find the coordinates of the vertex of the following parabola using graphing technology. Write your answer as an (x,y) point.y=2x2−8Answer:
Identify Vertex Form: The vertex form of a parabola is given by y=a(x−h)2+k, where (h,k) is the vertex of the parabola. To find the vertex of the given parabola y=2x2−8, we need to complete the square or use the vertex formula h=−2ab for a parabola in standard form y=ax2+bx+c. Since there is no bx term in the given equation, b=0. Therefore, we can directly apply the vertex formula.
Apply Vertex Formula: Using the vertex formula h=−2ab, we substitute a=2 and b=0 into the formula to find the x-coordinate of the vertex.h=−2⋅20=0The x-coordinate of the vertex is 0.
Calculate Coordinates: To find the y-coordinate of the vertex, we substitute the x-coordinate back into the original equation y=2x2−8.y=2(0)2−8=−8The y-coordinate of the vertex is −8.
Final Vertex: The coordinates of the vertex of the parabola are (0,−8).
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