aleabd13
aleabd13 aleabd13
  • 09-08-2019
  • Mathematics
contestada

Solve each equation by elimination.

d. y = x² - 4x + 7
y = -x + 11

Respuesta :

yungsherman
yungsherman yungsherman
  • 09-08-2019

Answer:

(4,7), (-1,12)

Step-by-step explanation:

I will solve using elimination by subtracting one equation from the other.

  y = x² - 4x + 7

- y =       -x + 11

__________

0 = x² - 3x -4

0 = (x - 4)(x + 1)

x = 4, x = -1

We can plug in these values to get the corresponding y -values.  

The solutions should be : (4,7), (-1,12)

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