1.Tentukan persamaan garis yang memiliki gradien 3 dan melalui titik (-1,2) 2.Persamaan garis yang melalui titik (5,-4) dan bergradien 5 3.Tentukan persamaan garis yang melalui titik (2,-3) dan (-1,0) 4.Tentukan persamaan garis yang melalui titik (-4,0) dan (0,-2) 5.Tentukan persamaan garis yang memiliki gradien 0 dan melalui titik (-1,-3)
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elisabethatika
1. y - y1 = m (x - x1) y - 2 = 3 (x+1) y - 2 = 3x + 3 y = 3x +5
2. y - y1 = m (x-x1) y + 4 = 5(x-5) y + 4 = 5x -25 y = 5x - 29
3. y-y1 / y2 - y1 = x -x1 / x2-x1 = y +3 / 0 + 3 = x - 2 / -1 -2 = y + 3 / 3 = x-2/-3 = -3(y + 3) = 3(x-2) 3x + 3y + 9 = 0 x + y + 3 = 0
y - 2 = 3 (x+1)
y - 2 = 3x + 3
y = 3x +5
2. y - y1 = m (x-x1)
y + 4 = 5(x-5)
y + 4 = 5x -25
y = 5x - 29
3. y-y1 / y2 - y1 = x -x1 / x2-x1
= y +3 / 0 + 3 = x - 2 / -1 -2
= y + 3 / 3 = x-2/-3
= -3(y + 3) = 3(x-2)
3x + 3y + 9 = 0
x + y + 3 = 0
4. y - 0/-2-0 = x+4/0+4
y-0/-2 = x+ 4/4
4y - 0 = -2x -8
2x + 4y + 8 = 0
x + 2y + 4 = 0
5. y-y1 = m (x-x1)
y + 3 = 0 (x+1)
y = -3
= y-2 = 3(x-(-1))
= y-2 = 3(x+1)
= y-2 = 3x+3
= y-3x-2-3 = 0
= y-3x-5 = 0
2. = y-y1 = m(x-x1)
= y-(-4) = 5(x-5)
= y+4 = 5x-25
= y-5x+4+25 = 0
=y-5x+29 = 0
3. = y-y1 : y2-y1 = x-x1 : x2-x1
= y-(-3) : 0-(-3) = x-2 : -1-2
= y+3 : 3 = x-2 : -3
= -3(y+3) = 3(x-2)
= -3y-9 = 3x-6
= -3y-3x-9+6 = 0
= -3y-3x-3 = 0
4. = y-y1 : y2-y1 = x-x1 : x2-x1
= y-0 : -2-0 = x-(-4) : 0-(-4)
= y-0 : -2 = x+4 : 4
= 4(y-0) = -2(x+4)
= 4y = -2x-8
= 4y+2x+8 = 0
5. = y-y1 = m(x-x1)
= y-(-3) = 0(x-(-1))
= y+3 = 0(x+1)
= y+3 = 0