ilikesquirtles
ilikesquirtles ilikesquirtles
  • 19-01-2021
  • Mathematics
contestada

Which ordered pair is the solution to the system of equations?

y= 2x – 15
4x + 3y = -5

A. (7, – 11)
B. (0, 6)
C. (4, - 7)
D. (5 - 5)

Respuesta :

sqdancefan
sqdancefan sqdancefan
  • 29-07-2021

9514 1404 393

Answer:

  C.  (4, -7)

Step-by-step explanation:

The first equation gives an expression for y that can be substituted into the second:

  4x +3(2x -15) = -5

  10x -45 = -5

  10x = 40

  x = 4 . . . . . . identifies C as the appropriate choice

  y = 2(4) -15 = -7 . . . . confirms the choice

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