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Delvig [45]
2 years ago
14

What is the slope of the line (-1 ,-7) and (3,9)?

Mathematics
2 answers:
3241004551 [841]2 years ago
7 0

Answer:

from what i know, i just got done with that, the slope is i think 4

Step-by-step explanation:

hope this helps, brainliest please

Feliz [49]2 years ago
5 0

Answer:

slope = 4

Step-by-step explanation:

Calculate the slope m using the slope formula

m = \frac{y_{2}-y_{1}  }{x_{2}-x_{1}  }

with (x₁, y₁ ) = (- 1, - 7 ) and (x₂, y₂ ) = (3, 9 )

m = \frac{9-(-7)}{3-(-1)} = \frac{9+7}{3+1} = \frac{16}{4} = 4

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BabaBlast [244]
The answer would be D. hope this helps
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3 years ago
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The graph shows the result of a matrix transformation, where the pre-image has dashed lines Which matrix operation is represente
diamong [38]

The <em>matrix operation</em> is the <em>addition subtraction </em>and <em>multiplication </em>involving matrices.  The coordinates of the <em>image </em>can be represented as a matrix obtained from the coordinates of the <em>preimage </em>through matrix operations

The best correct option is<u> option D)</u>,<em> (the y-coordinate for the point (8, -7) is to be replaced with a 7 to give (7, -7) as follows</em>:

\left[\begin{array}{rrrr}1&0\\0&-1\end{array}\right] \left[\begin{array}{rrrr}9&7&3&2\\-3&-7&-7&-5\end{array}\right]

The reason the above matrix value for the matrix operation are correct are as follows:

Known parameters:

From the diagram, we have that the <em>coordinates</em> of the vertices of the preimage are;

(2, -5), (3, -7), (9, -3), and (7, -7)

The <em>coordinates </em>of the vertices of the image are;

(2, 5), (3, 7), (9, 3), and (7, 7)

Required:

The matrix operation for the transformation of the preimage points to the image points

Solution:

The transformation from the coordinates of the vertices of primage to the  vertices of image involves the change in the sign from negative to positive, of the y-values of the image, which can be obtained by <em>multiplying by</em> (-1)

Therefore, the required matrix operation is presented as follows:

\mathbf{\left[\begin{array}{rrrr}1&0\\0&-1\end{array}\right] \left[\begin{array}{rrrr}9&7&3&2\\-3&-7&-7&-5\end{array}\right]} =\left[\begin{array}{rrrr}9&7&3&2\\3&7&7&5\end{array}\right]

Therefore, the <em>best correct</em> option is option D)

Learn more about matrix operations here:

brainly.com/question/17141646

3 0
3 years ago
Y is in direct proportion to x. x = 25, y = 5. Find the value of y, if x = 9.​
Sholpan [36]

Answer:bh

345

Step-by-step explanation:

y is in direct proportion to x. x = 25, y = 5. Find the value of y, if x = 9.​

8 0
2 years ago
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Write expression as a sine or cosine of an angle.<br>cos 94° cos 18° + sin 94° sin 18° ​
MArishka [77]
<h3>Answer:  cos(76)</h3>

=========================================================

Explanation:

The original expression is of the pattern cos cos + sin sin. This pattern matches the second identity in the hint. Specifically, we'll say the following:

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----------

We can verify this by use of a calculator. Make sure your calculator is in degree mode.

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e-lub [12.9K]

Answer:

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using 3.14 for pi, the difference is

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