trenedymorris301 trenedymorris301
  • 09-02-2020
  • Mathematics
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What is the solution of the system of equations? Write it as a coordinate. Ex: (1,2)

Graph 2x + 6y = 12 and 4x - 3y = 9

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rierie86
rierie86 rierie86
  • 09-02-2020
Sorry it’s side ways
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sqdancefan
sqdancefan sqdancefan
  • 09-02-2020

Answer:

  (x, y) = (3, 1)

Step-by-step explanation:

Add twice the second equation to the first:

  (2x +6y) +2(4x -3y) = (12) +2(9)

  10x = 30 . . . . . simplify

  x = 3 . . . . . . . . divide by 10

Now, put this value into either equation and solve for y.

  2(3) +6y = 12 . . . use the first equation

  6y = 6 . . . . . . . subtract 6

  y = 1 . . . . . . . . . divide by 6

The solution is (x, y) = (3, 1).

_____

A graphing calculator confirms this answer.

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