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3 years ago

PLEASE HELP ME!! FIRST ONE WILL GET BRAINLIEST!!!

Mathematics

1 answer:

KATRIN_1 [288]3 years ago

5 0

Answer:

-3, 0, 1/2, 3

Step-by-step explanation:

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Derive the equation of the parabola with a focus at (0, −4) and a directrix of y = 4.

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<u>Answer:</u>

$y=-\frac{1}{16} x^2$

<u>Step-by-step explanation:</u>

Equation of parabola with focus at (0,-4) and directrix is $y=4$ .

We know that parabola is the locus of all the points such that the distance from fixed point on the parabola to fixed line directrix is the same.

The parabola is opening downwards.

Let any point on parabola is (x,y).

Distance from focus(0,-4) to (x,y) = $\sqrt{(x-0)^2+(y-(-4))^2}=|y-4|$

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2 years ago

BRAINLIEST!!!

Papessa [141]

For the equation, the rate of change would be four.
Now looking at the graph, look at each point of the line that hits perfectly on a grid. Count up four, over two. The rate of change for the graph would be 4/2, or 2. Hope this helps!

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