Pertanyaan

Persamaan garis yang melalui titik A(-3,1) dan B(2,-2) adalah ....

3x + 5y = -4
x + 5y = 4
3x - y = 8
-x + y = -2

M. Mariyam

Master Teacher

Mahasiswa/Alumni Institut Pertanian Bogor

Jawaban terverifikasi

Pembahasan

$begin mathsize 14px style Persamaan space garis space yang space melalui space left parenthesis straight x subscript 1 comma space straight y subscript 1 right parenthesis space dan space left parenthesis straight x subscript 2 comma space straight y subscript 2 right parenthesis space colon fraction numerator straight y subscript straight space minus straight space straight y subscript 1 over denominator straight y subscript 2 minus straight space straight y subscript 1 end fraction equals fraction numerator straight x subscript straight space minus straight space straight x subscript 1 over denominator straight x subscript 2 minus straight space straight x subscript 1 end fraction Maka space persamaan space garis space yang space melalui space left parenthesis negative 3 comma space 1 right parenthesis space dan space left parenthesis 2 comma space minus 2 right parenthesis space colon fraction numerator straight y subscript straight space minus 1 over denominator negative 2 minus 1 straight space end fraction equals fraction numerator straight x subscript straight space plus 3 over denominator 2 plus 3 end fraction fraction numerator straight y subscript straight space minus 1 over denominator negative 3 straight space end fraction equals fraction numerator straight x subscript straight space plus 3 over denominator 5 end fraction 5 straight y minus 5 equals negative 3 straight x minus 9 3 straight x plus 5 straight y equals negative 4 end style$