To Explain: How to find the distance from the focus to the directrix of the given parabola.
It has been determined that the distance from the focus to the directrix of the given parabola, is
Given:
The parabola,
Concept used:
The parabola whose equation is of the form,
Calculation:
As discussed, the parabola whose equation is of the form,
Note that, the directrix
The intersection of the directrix
So, the foot of the perpendicular, drawn from the focus,
Then, the distance from the focus to the directrix is the distance between the points
Now, the given parabola is
Simplifying,
Comparing the given parabola;
Then,
Thus, the distance from the focus to the directrix of the given parabola, is
Conclusion:
It has been determined that the distance from the focus to the directrix of the given parabola, is
Chapter 10 Solutions
High School Math 2015 Common Core Algebra 2 Student Edition Grades 10/11
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