diketahuisebuah titik E(a,b) didilatasikan terhadap titik(1,2)dan faktor skala -4 menghasilkan bayangan E'(13,-8) nilai a+b adalah.......
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13 = -4a +5 -8 = -4b+10
8 = -4a 4b = 18
a = -2 b = 18/4 = 9/2
dicek lagi ya perkaliannya, semoga membantu..
jadikan jawaban terbaik ya..