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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
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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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