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Ivan
3 years ago
14

WILL MARK BRAINLIEST Select the correct answer. An inverse variation includes the point (3,-4). Which point would also belong in

this inverse variation?
Mathematics
1 answer:
viktelen [127]3 years ago
5 0

Answer:

If we have two quantities x and y, an inverse variation can be written as:

y = k/x

where k is a constant.

Now, we know that for this particular inverse variation the point (3, -4) is included.

Then we can find the value of k by replacing the values of the point in the general equation:

-4 = k/3

k = -4*3 = -12

Then our inverse variation is:

y = -12/x.

Then if we want another point that also does belong in the inverse variation, we can give x a different value and solve the equation for y.

For example, if x = 1

y = -12/1 = -12

then the point (1, -12) also does belong in the inverse variation.

if x = 6

y = -12/6 = -2

the point (6, -2) also does belong to the inverse variation

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Which of the following are incorrect expressions for slope?
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Answer:

Option B and C are correct.

\frac{x_2-x_1}{y_2-y_1}

\frac{run}{rise} are the expression incorrect for slope

Step-by-step explanation:

Slope is defined as the change in the dependent variable  relative to the change in the dependent variable

or the ratio of the horizontal changes to vertical changes between any two points on the graph of the line.

The vertical changes between any two points is rise

The horizontal changes between any two points is run.

Formula for slope is given by:

For any two points (x_1, y_1) and (x_2, y_2)

then slope is:

\text{Slope} =\frac{rise}{run}= \frac{y_2-y_1}{x_2-x_1}

or we can write this as:

Δy = y_2-y_1

Δx = x_2-x_1

⇒\text{Slope} = \frac{\triangle y}{\triangle x}

Therefore, the expression which are incorrect for slope  are;

\frac{x_2-x_1}{y_2-y_1}

\frac{run}{rise}

8 0
3 years ago
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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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We're going to "cut" the repeating part here in a few steps. First, we're going to put the number in a variable:

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Next, to get rid of the negative, we can multiply either side by -1 to get

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And finally, we can divide either side of the equation by -990 to find that

x= \frac{2022}{-990}=-\frac{2022}{990}\div \frac{6}{6}=-\frac{337}{165}

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