AkbarYG
Dik : Melalui titik (-3,1) (a,2) M = 1/8 Dit : a ? Jawab : 1) Cari Persamaan Garisnya dulu y - y1 = M(x- x1) y - 1 = 1/8 (x-(-3) y = 1/8x + 3/8 + 1 y = 1/8x + 3/8 + 8/8 y = 1/8x + 11/8 2) Cari a menggunakan Persamaan garis yg baru saja di dapat y = f(x) = 1/8x + 11/8 f(a) = 1/8a + 11/8 -11/8 + 2 = a/8 -11/8 + 16/8 = a/8 5/8 = a/8 a = 5
Verified answer
(-3,1) dan (a,2)(X1, y1 ) dan( x2, y2)
Gradien melalui 2 titik
1/8 =( y2-y1) / ( x2-x1)
1/8 = (2-1) / a-(-3)
1/8 = 1/ (a+3)
1×(a+3) = 8×1
a+3 = 8
a= 8-3
a= 5
Dit : a ?
Jawab :
1) Cari Persamaan Garisnya dulu
y - y1 = M(x- x1)
y - 1 = 1/8 (x-(-3)
y = 1/8x + 3/8 + 1
y = 1/8x + 3/8 + 8/8
y = 1/8x + 11/8
2) Cari a menggunakan Persamaan garis yg baru saja di dapat
y = f(x) = 1/8x + 11/8
f(a) = 1/8a + 11/8
-11/8 + 2 = a/8
-11/8 + 16/8 = a/8
5/8 = a/8
a = 5