Tentukan titik potong 2 buah garis lurus pada soal-soal berikut ini !
a. 2x + y = 7 dg x- 2y= -4
b. x + 2y = 0 dg 2x-y= -5
c. 3x + 2y = 13 dg x-3y= 9
d. 4x-3y=-1 dg 3x +5y=-8
e. -2x + y= -1 dg 5x -y= -5
a. 2x + y = 7 dg x- 2y= -4
b. x + 2y = 0 dg 2x-y= -5
c. 3x + 2y = 13 dg x-3y= 9
d. 4x-3y=-1 dg 3x +5y=-8
e. -2x + y= -1 dg 5x -y= -5
x - 2y = -4 | 2 |
2x + y = 7
2x - 4y =-8 _
5y = 15
y = 3
x = 2 tipot (2,3)
b. x + 2y = 0 | 2 |
2x - y = -5 | 1 |
2x + 4y = 0
2x - y = -5_
5y = 5
y = 1
x = -2 tipot ( -2 , 1)
begitu seterusnya :D