Q. Find the coordinates of the vertex of the following parabola algebraically. Write your answer as an (x,y) point.y=−2x2−18Answer:
Calculate x-coordinate: To find the vertex of a parabola in the form y=ax2+bx+c, we can use the formula x=−2ab to find the x-coordinate of the vertex.In this equation, a=−2 and b=0 (since there is no x term).Let's calculate the x-coordinate of the vertex.x=−2ab=−2×−20=0
Find y-coordinate: Now that we have the x-coordinate of the vertex, we can find the y-coordinate by substituting x back into the original equation.y=−2x2−18Substitute x=0:y=−2(0)2−18=−18
Determine vertex coordinates: The coordinates of the vertex are therefore (x,y)=(0,−18).
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