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leonid [27]
4 years ago
11

Nancy has to find the coordinates of the reflection of the point across the y-axis. How can she find the coordinates of the new

point without graphing the point? is there a rule that she can apply to find it?
Mathematics
2 answers:
oksian1 [2.3K]4 years ago
4 0

Answer: (x, y) transforms into (-x, y)

Step-by-step explanation:

When we do a reflection over a given axis, the distance between the initial point to the axis must be the same as the distance of the reflected point to the axis.

So if we do a reflection over the y-axis, then the value of y must be fixed.

So if we start with the point (x, y), the only other point that is at the same distance from the y-axis is the point (-x, y)

So the rule is, the y value remains equal and the x changes of sign.

sdas [7]4 years ago
3 0

Answer:

-x/y axis turns into x/y axis.

Step-by-step explanation:

I hope I helped and I need brainly points so i can ask my very important questions.

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On the graph below are three points X, Y, and Z. Write the coordinates for the given dilation.
Julli [10]

ANSWER

( -  \frac{3}{2} , - 1)

EXPLANATION

From the graph, the coordinates of Y are:

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We want to find the image of this point after a dilation by a scale factor of -½ about the origin.

The rule for the dilation is :

(x,y)\to( - \frac{1}{2}  x, -  \frac{1}{2} y)

To find the coordinates of Y', we plug the coordinates of Y.

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The first choice is correct.

6 0
4 years ago
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Rus_ich [418]
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7 0
4 years ago
For any two documents x and z, define k(x; z) to equal the number of unique words that occur in both x and z (i.e., the size of
liq [111]

Answer:

Yes, the function is a kernel

Step-by-step explanation:

Given

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We want to show that the above is a kernel.

To do this, we'll explicitly construct feature vectors φ(x) and φ(z)

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The feature mapping is constructed as φ(x) for x by the following:

For the kth word wk in V, if wk appears in document x, assign φ(x) k(the kth element ofφ(x)) to be 1; else φ(x)k to 0.

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3 years ago
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Crazy boy [7]

Answer:

p = 8 +  \sqrt{34}  = 13.83095...

Step-by-step explanation:

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