Kunci Jawaban Matematika Kelas 8 Halaman 185-188 Uji Kompetensi 4 Persamaan Garis Lurus, Esai Nomor 6-10

a. Garis l

m = (5 - 3)/(0 - (-1)) = 2

y - 5 = 2(x - 0)

y - 5 = 2x

y = 2x + 5

b. Garis k

m = (3 - 2)/(-1 - 0) = -1

y - 2 = -1(x - 0)

y - 2 = -x

x + y = 2