junitanjung
Rumus pers garis melalui 1 titik dam gradian (m) adalah y-y1=m(x-x1)
jd pers grs melaui A(4,-2) dam m=-1/2 y-y1=m(x-x1) y-(-2)=-1/2(x-4) y+2=-1/2x+2 y=-1/2x+2-2 y=-1/2 x atau 2y=-x
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ohsodell
bisa jawab jg gaaaa [1] B (1,-3) M -2/3 [2] C (0,4) M -4 [3] K (-5,0) M -2
junitanjung
sma jg kek diatas dek
rumus yg digunakan sma
tinggal mnggantikan y1 ,m,x1 na ja
ohsodell
kalau yang inniiiiiiii bantuin dong ya aduhhhh [nmr1]. P (5,-4) Q (-5,1) [nmr2] A (-1,5) B (2,8) [nmr3] A (-2,0) B (0,7) [nmr4] P (5,0) R (4,-2) [nmr5]
A (-4,5) L (0,-2) [nmr6] N (4,0) M (0,-6)
junitanjung
Rumus pers melalui 2 titik adalah
x-x1/x2-x1=y-y1/y2-y1
cth nmr 1 x-5/-5-5=y-(-4)/1-(-4)
x-5/-10=y+4/5 (kali silang)
5x-25= -10y-40
junitanjung
5x+10y=-40+25
5x+10y=-15 atau
5x+10y+15=0
y-y1=m(x-x1)
jd pers grs melaui A(4,-2) dam m=-1/2
y-y1=m(x-x1)
y-(-2)=-1/2(x-4)
y+2=-1/2x+2
y=-1/2x+2-2
y=-1/2 x
atau
2y=-x