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siniylev [52]
2 years ago
8

PLSSSSS HELP ME!!! 80 Points!!

Mathematics
2 answers:
PIT_PIT [208]2 years ago
8 0

Answer: <em> (-1; 3)</em>

Step-by-step explanation:

<em>y = -x + 2</em>

<em>y = 4x + 7</em>

<em />

<em>4x + 7 = -x + 2</em>

<em>4x + 7 + x - 7 = - x + 2 + x - 7</em>

<em>5x = - 5</em>

<em>x = - 1</em>

<em />

<em>y = 4(-1) + 7</em>

<em>y = 3</em>

<em>Intersection point: (-1; 3)</em>

<u><em>See the solution on the photo</em></u>

maks197457 [2]2 years ago
7 0

Answer:

y=−x+2y=4x+7   NO

y=−x+2               YES

y=4x+7            

Multiply the first equation by 4, obtaining:              4y = -4x + 8

Add the 2nd equation to this result:                          y = 4x  + 7

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

                                                                                5y = 15, and y = 3

Then, using the first equation, determine x:

y = 3 = -x + 2

      1 = -x, so x = -1

The solution is (-1, 3)

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