Answer:
The equation is
and the graph looks like this
A truck waveling at an average rate of 45 miles per hour leaves a rest stop. Fifteen minutes later a car traveling at an average
1 answer:
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The equation of a parabola is:
If a>0, then the parabola opens up;
If a<0, then the parabola opens down.
The coordinates of focus are:
If a>0, then the parabola opens up;
If a<0, then the parabola opens down.
The coordinates of focus are: