Question

Do all the parts:
Solve pair of simultaneous equations 3x + y - 12=0 and x-3y+6=0 by graphical method and find the area of triangle formed by lines with x-axis​

Answer 1

Answer:

x=3 &y=3

Step-by-step explanation:

3x+y-12=0 __1 ; x-3y+6=0 _____2

3(-6+3y)+y-12=0 ; x=-6+3y

-18+9y+y-12 =0 ; x=-6+3(3)

10y= 30 ; x=3

y= 30/10

y= 3

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