Which statement accurately describes how to reflect point A (1, 1) over the y-axis?

Mathematics

2 answers:

densk [106]3 years ago

6 0

Step-by-step explanation:

This are the answers idk which one it is tho

Citrus2011 [14]3 years ago

4 0

Answer:

$A(1,1)\to A'(-1,1)$

Step-by-step explanation:

The rule for reflecting a given point (x,y) over the y-axis is $(x,y)\to(-x,y)$ .

That means we reflect a given point over the y-axis by negating the x-coordinate of the given point.

If one of the options is "negate the x-coordinate of the preimage", then this is the correct option.

If you have: $A(1,1)\to A'(-1,1)$ among the options, then it is the correct answer.

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Using the fundamental principle of counting, we will find out that can be formed $4\times 4 = 16$ differents sequences (for example, AA, AG, TT, TG, CT...).

Know we know that, we can generalize. If I have $n$ elements and I must choose one of them $t$ times to do a sequence, the total number of sequence that I can form will be $n^t$ .

In our question, we want to know how many DNA sequence are exactly 29 letters long. As indicated above, the answer for that is $4\times 4\times 4\times ... \times 4$ (29 times) $= 4^{29}$ .