On a scale drawing of a building, 1 inch represents 14 feet. If the height of the actual building is 49 feet, what is the height
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Check the picture below, so the parabola looks more or less like so, with a vertex at (0 , -7), let's recall the vertex is half-way between the focus point and the directrix.
so this horizontal parabola opens up to the left-hand-side, meaning that the "P" distance is a negative value.
