Graph f(x)=-2x^2-12x-21

Mathematics

1 answer:

ELEN [110]3 years ago

5 0

Step-by-step explanation:

First, find the vertex. The x coordinate is -b/2a, or 12/-4=-3. Plug this back in to get -18+36-21 or -3, so the vertex is (-3, -3). Now, slowly make the x -2, -1, 0, 1, on and on. Because parabolas are symmetric along the vertex, they will have the same values as -4, -5, -6, on and on.

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Which is the graph of the function f(x)= negative square root x

Vsevolod [243]

First, note that $\sqrt{x}$ is always positive (except for x=0), so $-\sqrt{x}$ must be always negative.

Thus, the only plausible graphs are 1 and 3 since they are below the x-axis.

Now, $\sqrt{x}$ and $-\sqrt{x}$ are only defined for x≥0, because only for these x'es we can take the square root.

Note that the third graph has domain (-infinity, 0], so it is not the right one, while 1 is ok.

Answer: first graph

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3 years ago

Pls solve.. URGENT!!! Will give brainliest. EXPLAIN IN STEPS links will be reported

strojnjashka [21]

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