MATHEMATICS MIDDLE SCHOOL

Determine whether y varies directly with x. If so, find the constant of variation and write the equation. yes; k = 1/4 and y = 1/4x

No

yes; k = 4 and x - 4y

yes; k = 4 and y - 4y
Determine whether y varies directly with x. If so, find - 1

Answers

Answer 1
Answer:

Answer:

Yes, 4 and  y = 4x

Step-by-step explanation:

By looking at the graphic you see it's a straight line, not a hyperbolic curve, not a logarithm curve either, not a curve at all in fact.  And the line is neither totally horizontal nor totally vertical... so there's a direct relation, a direct positive relation, since the greater the x-value, the greater the y-value.

Then we have to find the constant of variation, or the slope of the line.

We'll take two points on the line (1,4) and (0,0) and examine their variance of Y over their variance of X... that will give us the constant of variation:

slope = (4-0)/(1-0) = 4

So the constant of variation is 4.

Now that we have the slope, its easy to find the full equation:

y = mx + b where m is the slope (we have it) and b is the value for y when x = 0.

By looking at he graph, we see that when x = 0, y = 0 as well.

So, the equation is: y = 4x

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Whatttttttttt I don't get what you are trying to say but cursive means a right print r a normal r
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Answers

Let X be chickens
Let Y be pigs,
then x+y=13
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 so 2x+4y=40
The system of the equations
[X+y=13
[2x+4y=40
Divide the second equation by 2
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subtract the first equation from the second one
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Answers

Do you know how to use a ratio table??

its pretty much like simplifying fractions:

so 280:420, and then we want to divide both sides by 280, resulting in a 1:1.5 ratio. 
your final answer is...

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Answers

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Answers

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Hope this helps comment below for more questions :)
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