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Contact [7]
3 years ago
10

Write a function rule for the data in the table. Determine if it's a direct variation, inverse variation or neither. Last, deter

mine the value of x if y=10.

Mathematics
1 answer:
marshall27 [118]3 years ago
5 0

I'm assuming you meant to say "graph" instead of "table".

The function rule is y = x+2 because the y intercept is 2, where the graph crosses the y axis. The slope is 1 meaning we move 1 unit up and 1 unit to the right each time. You can use the slope formula to determine the slope, or simply make this observation of rise vs run.

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

Because this line doesn't go through the origin, and because it's not in the form y = k*x, this means we do not have a direct variation equation.

We do not have an inverse variation equation either because it is not in the form y = k/x or x*y = k. A visual indication of this is that the graph isn't a curved hyperbola.

Therefore, this function is <u>neither </u>direct variation nor inverse variation

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

Plug in y = 10 and solve for x

y = x+2

x+2 = y

x+2 = 10

x+2-2 = 10-2

x = 8

The value of x is 8

So if x = 8, then y = 10 meaning that (x,y) = (8,10) is on this blue diagonal line.

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Beverage A and Beverage B are sold in identical cans. Beverage A is 6% sugar. The portion of Beverage B that is sugar is 0.21. H
muminat

Answer:

3.5 more times sugar in B

Step-by-step explanation:

We need to see that the fact that Beverage B is 0.21 sugar can be translated to percentages, just by multiplying and dividing by 100 to get it easier to see:

0.21 * 100 /100 =  21/100 = 21% percent

This means that for every 100 units, 21 are sugar.

Now we can compare percentages directly, as both have the same volume because are sold in identical cans. We need to get how many times is 21 greater than 6. The only thing we need to do is the ratio between them:

21/6= 3.5

This implies that 21 is 3.5 greater than 6, you can verify it by multiplying 6 by 3.5 and getting 21.

So, B has 3.5 times more sugar than A.

5 0
3 years ago
Use a system of equations to solve this problem.
andrew-mc [135]
A system is:
1.25 x + 2.25 y = 16
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---------------------------
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1.25 x + 2.25 * ( 8 - x ) = 16
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- x = - 2
x = 2
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y = 6
Answer:
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She bought 3 pounds of coffee

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3 years ago
Read 2 more answers
Translate the sentence into an equation.
Dvinal [7]

Answer:

X=2

Step-by-step explanation:

8-x=6

there the answer is 2

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