Jawabanmu

Jawaban paling cerdas!
2014-03-31T13:35:19+07:00
titik(1,2) à (x,y) E’(13,-8) K= -4 A(a,b) à A’(x+k(a-x),y+k(b-y) E(a,b) àE’(13,-8) A=(x+k(a-x)) B=(y+k(b-y)   X+k(a-x)=13                                                       y+k(b-y)=-8 1+(-4)(a-1)=13                                                   2+-4(b-2)=-8                                      -3a+1=13                                                             -2b+4=-8 -3a=13-1                                                              -2b=18-(-4) -3a=12                                                                  -2b=-12 A=-4                                                                      b=6
 A+b=-4+6=2



X+k(a-x)=13
1+(-4)(a-1)=13
-3a+1=13
-3a=13-1
-3a=12
A=-4
y+k(b-y)=-8
2+-4(b-2)=-8
-2b+4=-8
-2b=18-(-4)
-2b=-12
b=6
it yg a=-4 b=6 nnt tinggal di jumlah aja
Terina kasih banyak ya, jawaban ini sangat membantu bagi saya.
Soalnya, sudah 3 minggu tidak ada yang menjawab.
iyaa .. :D