Question

Solve pair of linear equations graphically : 2x-y=4& x+3y=9.​

Answer 1

Answer:

x = 3 & y = 2

Step-by-step explanation:

x + 3y = 9

x = 9 - 3y. ...equation (1)

2x - y = 4

substituting equation (1)

2(9 - 3y) - y = 4

18 - 6y - y = 4

7y = 14

y = 2 ....equation (2)

x = 9 - 3y

substituting equation (2)

x = 9 - 3(2)

x = 9 - 6

x = 3