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yudasyaputra
1) 6x -3y -1 = 0 a = 6 ,b = -3, c = -1 -a/b -> -6/-3 m = 2
2) 3x + y -2 = 0 a = 3, b = 1, c= -2 -a/b -> -3/1 m = -3
3) -y -2x + 1 = 0 atau -2x -y + 1 = 0 a = -2, b = -1, c = 1 -a/b -> -(-2) / -1 m = -2
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Yusrin091
1. Gradien dari: a. 6x - 3y - 1=0 <=> 3y = 6x - 1 <=> y = 2x - 1/3 Gradien (m) = 2 b. 3x + y - 2 = 0 <=> y = -3x + 2 Gradien (m) = -3 c. -y - 2x + 1 =0 <=> y = -2x + 1 Gradien (m) = -2
2. a. A(-3,-1), B(0,-2), C(2,1), D(1,3) b. Gradien k,l dan m * Gradien k yang melalui titik C dan D m = (3-1)/(1-2) = 2/-1 = -2 * Gradien l yang melalui titik A dan C m = (1-(-1))/(2-(-3)) = 2/5 * Gradien m yang melalui titik B dan C m = (1-(-2))/(2-0) = 3/2
3. Koordinat titik potong dari: a. 2x - 3y = 4 dan x + y = 5 => x = 5 -y 2x - 3y = 4 2(5-y) - 3y = 4 <=> 10-2y-3y = 4 <=> 10 - 5y = 4 <=> 5y = 6 <=> y = 6/5 x = 5 - y = 5 - 6/5 = 19/5 Titik potong = (19/5,6/5)
b. x - 5y = 2 => x = 2+5y dan 3x - 2y = 4 3x - 2y = 4 3(2+5y) - 2y = 4 <=> 6 + 15y - 2y = 4 <=> 13y = -2 <=> y = -2/13 x = 2 + 5(-2/13) = 2 - 10/13 = 16/13 Titik potong = (16/13, -2/13)
4. Gradien dari: a. m= 4 b. m = -5 c. m = 1/2 d. m = 3 e. m = 3/4
a = 6 ,b = -3, c = -1
-a/b -> -6/-3
m = 2
2) 3x + y -2 = 0
a = 3, b = 1, c= -2
-a/b -> -3/1
m = -3
3) -y -2x + 1 = 0
atau -2x -y + 1 = 0
a = -2, b = -1, c = 1
-a/b -> -(-2) / -1
m = -2
a. 6x - 3y - 1=0
<=> 3y = 6x - 1
<=> y = 2x - 1/3
Gradien (m) = 2
b. 3x + y - 2 = 0
<=> y = -3x + 2
Gradien (m) = -3
c. -y - 2x + 1 =0
<=> y = -2x + 1
Gradien (m) = -2
2. a. A(-3,-1), B(0,-2), C(2,1), D(1,3)
b. Gradien k,l dan m
* Gradien k yang melalui titik C dan D
m = (3-1)/(1-2) = 2/-1 = -2
* Gradien l yang melalui titik A dan C
m = (1-(-1))/(2-(-3)) = 2/5
* Gradien m yang melalui titik B dan C
m = (1-(-2))/(2-0) = 3/2
3. Koordinat titik potong dari:
a. 2x - 3y = 4 dan x + y = 5 => x = 5 -y
2x - 3y = 4
2(5-y) - 3y = 4
<=> 10-2y-3y = 4
<=> 10 - 5y = 4
<=> 5y = 6
<=> y = 6/5
x = 5 - y
= 5 - 6/5
= 19/5
Titik potong = (19/5,6/5)
b. x - 5y = 2 => x = 2+5y dan 3x - 2y = 4
3x - 2y = 4
3(2+5y) - 2y = 4
<=> 6 + 15y - 2y = 4
<=> 13y = -2
<=> y = -2/13
x = 2 + 5(-2/13)
= 2 - 10/13
= 16/13
Titik potong = (16/13, -2/13)
4. Gradien dari:
a. m= 4
b. m = -5
c. m = 1/2
d. m = 3
e. m = 3/4