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Westkost [7]
3 years ago
7

Which equation represents a proportional relationship between the x and y values?

Mathematics
2 answers:
allochka39001 [22]3 years ago
5 0

Answer:

y = kx

Step-by-step explanation:

We have to write an equation that states that the relationship between x and y is proportional.

Since x and y are proportional, so we can write symbolically  

y ∝ x

⇒ y = kx {Where k is the constant of proportionality}

So, this is the required equation. (Answer)

Geometrically it signifies that it is a straight line having constant slope k and it passes through the origin.  

telo118 [61]3 years ago
3 0

Answer:

The answer is D. y = −2x

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Determine the center and radius: x2 + y2 - 10x + 8y -8 = 0​
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So our equation currently is ⇒ x^2+y^2-10x+8y-8 = 0

<u>Let's first move all the constant to one side and group 'like variables' together</u>:

      (x^2-10x)+(y^2+8y) = 8

<u>Now lets complete the square of both equations</u>

    (x^2-10x+25)+(y^2+8y +16) = 8 + 25 + 16\\(x-5)^2+(y+4)^2 = 49\\(x-5)^2+(y+4)^2 = 7^2

<u><em>Now we know the circle's general equation format is</em></u>:

   ⇒(x-h)^2+(y-k)^2 = r^2

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  • r ⇒ length of radius of circle

<u>Thus the radius of the circle is 7</u>

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Hope that helps!

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2 years ago
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3 years ago
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Truth or false every fraction has a limited number of equivalent frections .
xeze [42]

Answer:

False.

Since the number of numbers in the world is infinite, there can be an infinite number of equivalent fractions.

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There are about 45000 farms in Nebraska using approximately 45 million acres of land. This farmland covers about 9/10 of the sta
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What is the correct way to write 9 x 9 x 9 in exponential form?
Harlamova29_29 [7]

Hey!

----------------------------------------------

Solution:

Put all the answer choices into expanded form.

3^9 = 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3

1^8 = 1 x 1 x 1 x 1 x 1 x 1 x 1 x 1

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Answer:

We can see that the only way to write to write 9 x 9 x 9 in exponential form is c) 9^3

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Hope This Helped! Good Luck!

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