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Mathematics

1 answer:

siniylev [52]3 years ago

5 0

Answer:

and now

Step-by-step explanation:

helloj jj

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WILL GIVE BRAINLIEST AND 50 POINTS!

monitta

Answer:

The vertex is at (-1,-7).

The answer to 2 is A.

Step-by-step explanation:

<h3>1st of all, for the vertex:</h3><h3 />

You want to make the absolute value be |0|, and you make that by assuming a x that is the opposite of the number that accompanies it.

In this case:

$|x + 1|$

Because:

$|( - 1) + 1| = 0$

Then:

$x = - 1$

And, by making the absolute value equal 0 when finding x, you're left with:

$y = - 7$

<h3>Secondly, for the domain and range question:</h3>

The easiest way is to graph, or make a table of values and see where the graph points.

I graphed it for you.

You can clearly see how the vertex, at (-1,-7) is the lowest point, telling you that the range is from that point upwards, or

$y \geqslant - 7$

Then, because you're dealing with absolute values, which never bend and make perfect 90° angles at their vertex, it is safe to assume both lines never touch and continue to opposites ends of the x-axis, or (-infinity, infinity) which is your domain.

<h2>Feel free to ask if you need any extra help. :)</h2>