Aparabola can be drawn given a focus of(-5,−9) and a directrix of
y=−5. write the equation of the parabola in any form.

Step-by-step explanation:

Given:

Focus: (-5,-9)

Directrix: y = -5

Find: equation of the parabola

The equation of the line perpendicular to the directrix and passing through the focus is x = -5. This is the line of parabola's symmetry.

The distance between the focus and the directrix is the parabola's parameter, so

The vertex of the parabola lies on the line of symmetry and divides the distance between the focus and the directrix into two equal parts. So, its coordinates are (-5,-7).

Parabola goes in negative y-direction, thus, the equation of the parabola is

1/3 + 1/5 = 8/15.

step-by-step explanation:

hope it

not only in mathematics, scientific proof also are required in the other field of science. also maths proofs are of particular structure, containing steps and logics. so proving is like doing science, it is science. that's why it is important to prove. 

an inaccurate proof leads to errors, or stating results that are not accurate.  which wil mess the probelm up you dont want this