1.tentukan persamaan garis yang melalui titik (-3,4) dan (5,2) 2.tentukan persamaan garis yang melalui titik p(-4,-2) dan (6,3) Nomor 1 dan 2 menggunakan rumus

1. y-4/2-4 = x-(-3)/5-(-3)
y-4/-2 = x+4/8
kali silang 
8y - 32 = -2x -6
8y= -2x -6 + 32
8y= -2x + 26 : 8
y= -4x + 3 1/4

2. y - (-2)/ 3 -(-2) = x - (-4)/ 5-(-4)

y+4/ 5 = x + 4 / 9
kali silang 
9(y+4) = 5(x+4)
9y + 36 = 5x + 20
9y=5x +20 -36 
9y= 5x -10 :9
y= dibagi sembilan aja

1.
[tex] \frac{y-y1}{y2-y1} [/tex] = [tex] \frac{x-x1}{x2-x1} [/tex]

[tex] \frac{y-4}{4-2} = \frac{x-(-3)}{-3-5} [/tex]

[tex] \frac{y-4}{2} = \frac{x + 3}{-8} [/tex]

-8y - 32 = 2x + 6
-8y - 2x = 32 + 6
-8y - 2x = 38

2.
[tex] \frac{y-y1}{y2-y1} [/tex] = [tex] \frac{x-x1}{x2-x1} [/tex]

[tex] \frac{y-(-2)}{3 - (-2)} = \frac{x- (-4)}{6 - (-4)} [/tex]

[tex] \frac{y + 2}{3 + 2} = \frac{x+4}{6+4} [/tex]

[tex] \frac{y + 2}{5} = \frac{x+4}{10} [/tex]

10y + 20 = 5x + 20
10y - 5x = 20 + 20
10y - 5x = 40