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Anestetic [448]
3 years ago
9

Please help I will give brainliest and 15 points

Mathematics
2 answers:
Kruka [31]3 years ago
8 0
Hi there, actually, the image that you provided us with does not have any grid or graph to mark the points on
maw [93]3 years ago
6 0

Answer:

Question

Why did you want to friend me??

Step-by-step explanation:

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Help please:Suppose that x and y inversely, and x=10 when y=8 write the function that models the inverse variation
jarptica [38.1K]

SOLUTION

From the question, we are told that y varies inversely as x

This is mathematically written as

\begin{gathered} y\propto\frac{1}{x} \\ \propto\text{ is a sign of proportionality } \end{gathered}

Now, we will remove the proportionality sign and replace it with equal to sign =

If we do this, we will intoduce a constant k

\begin{gathered} y\propto\frac{1}{x} \\ y=k\times\frac{1}{x} \\ y=\frac{k}{x} \end{gathered}

So we have the formula

y=\frac{k}{x}

We will substitute the values of x for 10 and y for 8 into the formula to get k, we have

\begin{gathered} y=\frac{k}{x} \\ 8=\frac{k}{10} \\ k=8\times10 \\ k=80 \end{gathered}

Now, we will substitute k for 80 back into the formula to get the inverse function, we have

\begin{gathered} y=\frac{k}{x} \\ y=\frac{80}{x} \end{gathered}

Hence the answer is option C

7 0
1 year ago
Help plsssssss homewrok do taday <br> -2x - 3y = 6
OlgaM077 [116]

Answer:

x=0/y=-2

y=0/x=-3

....∞

Step-by-step explanation:

6 0
3 years ago
13. Is the following the graph of a function? Why or why not? ​
Semenov [28]
No. To test whether a graph is a function or not you do the vertical line test where if a vertical line touches more than one point it is not a function
7 0
3 years ago
Suppose y varies directly with x. Write a direct variation equation that relates x and y. Then find the value of y when x=12
lidiya [134]

Answer:

Step-by-step explanation:

If two variables are directly proportional, it means that an increase in the value of one variable would cause a corresponding increase in the other variable.

Given that y varies directly with x, if we introduce a constant of proportionality, k, the expression becomes

y = kx

If y = 8 when x = 3, then

8 = 3k

k = 3/8

Therefore, the direct variation equation that relates x and y is

y = 3x/8

When x = 12, then

y = 3 × 12/8

y = 4.5

3 0
3 years ago
I need help with 18-27
Gwar [14]

Answer:

18-27= 01

Step-by-step explanation:

18

-27

---------

01

the one cancels out

8 0
3 years ago
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