brickbreakerwolf
brickbreakerwolf brickbreakerwolf
  • 26-03-2020
  • Mathematics
contestada

Find the solution of the system of equations.
6x + 8y = -8
x + 4y = 4
( , )​

Respuesta :

altavistard
altavistard altavistard
  • 26-03-2020

Answer:

the solution is (-4, 2)

Step-by-step explanation:

6x + 8y = -8

x + 4y = 4

... can be solved using elimination by addition and subtraction, among other methods.  Multiply the second equation by -2 to obtain

6x + 8y = -8

-2x - 8y = -8

Combining these results in

4x = -16.  Thus, x = -4.

Substituting -4 for x in x + 4y = 4 results in

-4 + 4y = 4, or 4y = 8, or y = 2

Then the solution is (-4, 2)

Answer Link

Otras preguntas

Determine whether these functions are invertible. Find inverses of the invertible functions. (a) f(x) = x−2. (b) f(x) = x^{2}, where x ∈ R. (c) f(x) = x^{2}, wh
example of a line that has no slope
how do conservationists make use of watersheds and eco zones? why is this important?
16x²-81=0 solve the following quadratic equation
School is cancelled if there is at least 8 inches of snow at 5am. If there are three inches of snow at 8 pm the night before and snow is predicted to fall at
I need a simple diagram that I can easily understand tectonic plates...
If snow is falling at a rate of 1/4 inch every 30 minutes, how much snow will fall in 4 1/2 hours.
Compare and contrast centipedes and millipedes
How can you tell when a solution is formed?
What might happen to the sea star population after oyster beds are destroyed