titik potong antara garis y=4x-11 dgn garis 3y=2x-3 adlh..

y = 4x - 11
y - 4x = - 11

3y = 2x - 3
3y - 2x = - 3

ttk potong
y - 4x = - 11
3y - 2x = - 3 |×2
maka
y - 4x = - 11
6y - 4x = - 6
------------------(-)
- 5y = - 5
y = 1

subtitusi
y = 4x - 11
1 = 4x - 11
- 4x = - 11 - 1
- 4x = - 12
x = 3

ttk potong ( 3,1 )

Jawabannya:
y=4x-11
y-4x= -11

3y=2x-3
3y-2x= -3
Tipot
y-4x= -11. |×1|
3y-2x= -3 |×2|

y-4x= -11
6y-4x= -6
--------------- -
-5y. = -5
y= -5/-5
y= 1

subs.
y= 4x-11
1= 4x-11
-4x= -11-1
-4x= -12
x= -12/-4
x= 3
Tipot ={ 3,1 }

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