Question

1.tentukan persamaan garis yang melalui titk A(-3,4) dan B(2,-5)!!!

Answer 1

M = y₂ - y₁
       x₂ - x₁
    = -5-4
        2+3
    = -9
         5
y-y₁ = m (x-x₁)
y-4 = -9/5 (x+3)
5y-20 = -9x-27
9x + 5y -20+27 = 0
9x + 5y + 7 = 0

Answer 2

X-x1 : x2 - x1 = y - y1 : y2 -y1
x - (-3) : 2 - (-3) = y - 4 : -5 - 4
x - 3 : 5 = y - 4 : -9
-9 (x - 3) = 5 (y-4)
-9x + 27 = 5y -20