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rusak2 [61]
3 years ago
13

For the equation -4y=8x what is the constant variation A. -4 B. -2 C. 1 D. 2

Mathematics
1 answer:
PolarNik [594]3 years ago
8 0

Answer:

B -2

Step-by-step explanation:

y = kx  where k is the constant of variation

We have -4y = 8x

Divide each side by -4

-4y/-4 = 8x/-4

y = -2x

The constant of variation is -2

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A transformation T : (x, y) → (x + 3, y + 1). Find the preimage of the point (4, 3) under the given transformation. (7, 4) (1, 2
motikmotik

Answer:

(1, 2)

Step-by-step explanation:

Remember that the final shape and position of a figure after a transformation is called the image, and the original shape and position of the figure is the pre-image.

In our case, our figure is just a point. We know that after the transformation T : (x, y) → (x + 3, y + 1), our image has coordinates (4, 3).

The transformation rule T : (x, y) → (x + 3, y + 1) means that we add 3 to the x-coordinate and add 1 to the y-coordinate of our pre-image. Now to find the pre-image of our point, we just need to reverse those operations; in other words, we will subtract 3 from the x-coordinate and subtract 1 from the y-coordinate.

So, our rule to find the pre-image of the point (4, 3) is:

T : (x, y) → (x - 3, y - 1)

We know that the x-coordinate of our image is 4 and its y-coordinate is 3.

Replacing values:

                (4 - 3, 3 - 1)

                (1, 2)

We can conclude that our pre-image is the point (1, 2).

6 0
2 years ago
Person who answers first and correctly will be named the brainiest answer.
Korvikt [17]
1) From building 1 to 2: 5 - (-3) = 8

2) From 2 to 3: 4 - (-5) = 9

3) From 3 to 4: 5 - (-3) = 8

4) From 4 to 1: 4 - (-5) = 9

Total: 8 + 9 + 8 + 9 = 34 units = 34*100 feet = 3400 feet.

Answer: 3400 feet
6 0
3 years ago
7over 8 times 4over 9 without multiplying
posledela
11 over 13 I think is the answer
4 0
3 years ago
Why are decimal that is 1/10 of 0 and 9.​
notka56 [123]

Answer:1/10 and 0/10

Step-by-step

8 0
2 years ago
Which would not be a step in finding the area of a circle by cutting it
Mkey [24]

Answer:

D. Continue cutting smaller and smaller slices.

Step-by-step explanation:

While, in theory, this could be a step, it would be a pointless one. You would have to eventually rearrange the pieces, but now there would be more of them.

Hope this helps!

4 0
2 years ago
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