5. Tentukan gradien garis yang melalui dua titik berikut a. A(2,7) dan B(5,8) b. P(-2,1) dan Q(6,9) c. R(1,3) dan S(0,0) d. C(-8,-1) dan D(-3,-4) e.F(3,-7) dan

1. A ( x1, y1) = A(2,7) dan B (x2, y2)=B(5,8)
m= (y2-y1)/(x2-x1) = (8-7)/(5-2) = 1/(-3) = - 1/3
2. P( x1, y1) = P(-2,1) dan Q (x2, y2)=Q(6,9)
m= (y2-y1)/(x2-x1) = (9-1)/(6-(-20))=8/26=4/13
3.R ( x1, y1)= R(1,3) danS (x2, y2)= S(0,0)
m= (y2-y1)/(x2-x1) = (0- (-3))/(0-(-1))=3/1=3
4. C ( x1, y1)=C(-8,-1) dan B (x2, y2)= B(-3,-4)
m= (y2-y1)/(x2-x1) = (-4- (-1))/(-3-(-8))=-4/2=-2
5. F ( x1, y1)= F(3,-7) dan Q (x2, y2)= Q(-4,2)
m= (y2-y1)/(x2-x1) = (2- (-7))/(-4-(-3))=9/-1=-9
6.a. (x1,y1) = (3,0)  dan (x2,y2) = (0,6), m= (y2-y1)/(x2-x1) = 6/-3=-2
6.b.(x1,y1) = (-6,0)  dan (x2,y2) = (0,3), m= (y2-y1)/(x2-x1) = 3/6=1/2
6.c.(x1,y1) = (4,0)  dan (x2,y2) = (1,2), m= (y2-y1)/(x2-x1) = 2/-3=-2/3
6.d.(x1,y1) = (-3,0)  dan (x2,y2) = (3,5), m= (y2-y1)/(x2-x1) = 5/(3-(-3))=5/6
7. P(x1,y1)=P(2,5), Q (x2,x1) = Q(-4,6) m=(y2-y1)/(x2-x1) = -1/6
8. A (2,p) dan B (4,5)
m= (y2-y1)/x2-x1)
2= (p-5)/(2-4)
2= p-5/-2
2 x -2 = p-5
-4 = p-5
p=5-4 =1
9.R(a,3) dan T (5,4)
m= (y2-y1)/x2-x1)
1/3 =  (3-4)/(a-5)
a-5 = 3 x (-1)
a-5 = -3
a=-3+5
a=2