StormRider6379 StormRider6379

01-05-2017
Mathematics

contestada

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

y=3x+1

y=5x-3

A.(0,1)

B.(2,3)

C.(2,7)

D.(1,2)

Respuesta :

Kmieteczka Kmieteczka

01-05-2017

{y=3x+1 |*5
{y=5x-3 |*(-3)

{5y=15x+5
{-3y=-15x+9
+___________
2y=14

{y=7
{7=3x+1

{3x=6
{y=7

{x=2
{y=7

The answer: C

:)

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