persamaan garis sejajar hd garis y=3x melalui titik (3'9)

Bab Persamaan Garis
Matematika SMP Kelas VIII

ax + by = c, sejajar, (p, q)
ax + by = ap + bq

y = 3x
3x - y = 0, sejajar, (3, 9)
3x - y = 3 . 3 - 1 . 9
3x - y = 9 - 9
3x - y = 0
y = 3x

garisnya sama