Q. Write the equation in vertex form for the parabola with vertex (0,0) and directrix y=−10.Simplify any fractions.______
Identify Orientation: Identify the orientation of the parabola based on the directrix.Since the directrix is y=−10, which is horizontal, the parabola is vertical.
Determine Opening Direction: Determine the direction the parabola opens. The vertex (0,0) is above the directrix y=−10, so the parabola opens upwards.
Calculate Distance: Calculate the distance between the vertex and the directrix.The distance is ∣0−(−10)∣=10.
Find Value of 'a': Find the value of 'a' using the distance.The distance is equal to 4a1, so 10=4a1.Solving for 'a' gives a=401.
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