This table shows the number of students at a school in the years 2014-2016, 2014 1,030 students 2015 ? students 2016 1,300 stude
1 answer:
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The statement above is represented in the figure below. We have plotted the focus, the directrix and the parabola. So we know that the parabola opens downward. We also know that:
Because this is true the equation of the parabola is:
So our goal is to find the value of
. Given that the parabola opens downward, then 
and from the figure:
Accordingly:
Finally, the right answer is <span>f(x) = − one sixteenth x2</span>
Because this is true the equation of the parabola is:
So our goal is to find the value of
Accordingly:
Finally, the right answer is <span>f(x) = − one sixteenth x2</span>