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PSYCHO15rus [73]
3 years ago
6

30 POINTS! Please help! Which table shows a proportional relationship between x and y?

Mathematics
2 answers:
DerKrebs [107]3 years ago
4 0

Answer:

B

Step-by-step explanation:

Both x and y have pattern and it’s clear to see it

Pani-rosa [81]3 years ago
3 0
It would be the third one. (1,5) (2,10)


Explanation:

It’s proportional because each time the x goes up by one the y goes up by 5.
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Need help #1. The answer is shown, but I don’t know how to get to the answer. Please teach and show steps.
Rufina [12.5K]

Answer:

B

Step-by-step explanation:

We are given that <em>x</em> and <em>y</em> are functions of time <em>t</em> such that <em>x</em> and <em>y</em> is a constant. So, we can write the following equation:

x(t)+y(t)=k,\text{ where $k$ is some constant}

The rate of change of <em>x</em> and the rate of change of <em>y</em> with respect to time <em>t</em> is simply dx/dt and dy/dt, respectively. So, we will differentiate both sides with respect to <em>t: </em>

<em />\displaystyle \frac{d}{dt}\Big[x(t)+y(t)\Big]=\frac{d}{dt}[k]<em />

Remember that the derivative of a constant is always 0. Therefore:

\displaystyle \frac{dx}{dt}+\frac{dy}{dt}=0

And by subtracting dy/dt from both sides, we acquire:

\displaystyle \frac{dx}{dt}=-\frac{dy}{dt}

Hence, our answer is B.

3 0
2 years ago
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Answer:

Step-by-step explanation:

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First divide the 2nd equation by -3
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8 0
3 years ago
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