Javier is 175% heavier than his brother. If Javier's brother weighs 80 pounds, how much does Javier weigh?
2 answers:
You might be interested in
Check the picture below, so the parabola looks more or less like that.
now, the vertex is half-way between the focus point and the directrix, so that puts it where you see it in the picture, and the horizontal parabola is opening to the left-hand-side, meaning that the distance "P" is negative.
