Tentukan persamaan garis melalui 2 buah titik (-7 -8) (3 -6)

By Posted on

Tentukan persamaan garis melalui 2 buah titik (-7 -8) (3 -6)

persamaan garis

x…..y

-7…..-8…..(-7 × (-6)) = 42

3……-6…..(3 × (-8)) = -24

___________________ (-)

-10…..-2…..66

-10y = -2x + 66

-5y = -x + 33

x – 5y = 33 ✔

Jawaban:

cari gradien

m = frac{y2 - y1}{x2 - x1}

m = frac{ - 6 - ( - 8)}{3 - ( - 7) } = frac{2}{10} = frac{1}{5}

y-y1 = m(x-x1)

y- (-8) = 1/5 (x -(-7))

5(y +8) = x + 7

5y +40 = x + 7

x-5y-33 = 0

x-5y = 33