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nataly862011 [7]
3 years ago
11

Write a system of linear equations that has (-4, 8) as the solution. Once you have made your system of equations, solve it algeb

raically to show that you do indeed get the solution (-4, 8).
Mathematics
1 answer:
Firlakuza [10]3 years ago
3 0

Answer:

See below

Step-by-step explanation:

(-4, 8) has to be the solution.

1st equation: -4x+8y = 1

2nd equation: 8x - 4y = 1

These should work. Do the matrix-substitution combo method to see:

-4  8  1

.8 -4  -1

Reduce and and matrix-substitution combo:

1 0 -4

0 1  8

The reduced eckerd form of the matrix shows that the solutions are (-4, 8)

Therefore it -4x + 8u = 1 and 8x - 4y = 1 are the two equations for the system.

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(co<br> Write a cosine function that has an amplitude of 2, a midline of 5 and a period of 8.
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Answer:

<em>y=2 cos (π/4x-π/4)</em>

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<em>Given</em>

<em>A cosine function has an amplitude of 2, a midline of 5 and a period of 8.</em>

<em>To find: </em>

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<em>Explanation:</em>

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