Titik potong kedua garis y=3x-1 dan y=x+5 adalah , PAKE CARA A. (-1,5) , B (3,8) C.(3,-1) D. (3,5)
wiyama
Y = x + 5 ---> y = 3x - 1 x + 5 = 3x - 1 5 + 1 = 3x - x 6 = 2x 2x = 6 x = 6/2 = 3 x = 3 ---> y = 3x - 1 y = 3(3) - 1 y = 9 - 1 y = 8 HP ( 3,8) -------->> B
x + 5 = 3x - 1
5 + 1 = 3x - x
6 = 2x
2x = 6
x = 6/2 = 3
x = 3 ---> y = 3x - 1
y = 3(3) - 1
y = 9 - 1
y = 8
HP ( 3,8) -------->> B