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Amiraneli [1.4K]
2 years ago
6

The directrix and focus of a parabola are shown on the graph. Which is an equation for the parabola?

Mathematics
2 answers:
Soloha48 [4]2 years ago
7 0
The answers is x=-3……….
raketka [301]2 years ago
4 0
So we know the focus and deritrix, so plug it into the distance formula

Square root all (x - 1)^2 (y- 3)^2 = (x + 5)^2 just do some algebra you will get x^2 -2x + 1 + y^2 - 6y + 9 = x^2 + 10x + 25, simplified you will get -12x - 15 = 6y - y^2. I’m pretty sure the answer is c
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3 years ago
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3 years ago
Q · 7/9 = 4<br> What is q?
FrozenT [24]

Answer:

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Step-by-step explanation:

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If we want it as a mixed number instead of an improper fraction

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3 years ago
Find all the critical points of the function <img src="https://tex.z-dn.net/?f=%20f%28x%29%3D%20%28x%2B1%29%2F%28x-3%29%20" id="
yulyashka [42]

The function

... y = 1/x

has derivative

... y' = -1/x²

which has no zeros. It is undefined at x=0, the only critical point. The derivative is negative for all values of x, so the function is decreasing everywhere in its domain.

Your function

... y = (x+1)/(x-3)

can be written as

... y = 1 +4/(x-3)

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The critical point is x=3.

The function is decreasing on (-∞, 3) ∪ (3, ∞), increasing nowhere.

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3 years ago
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