hitunglah gradien garis yang menghubungkan setiap pasangan titik berikut ini(jiks gradiennya ada) a. A(4,1)dan(6,7)b.C(-3,6)dan D(1,10)dan no 5

No 4
A.)
A(4,1) —–> (x1,y1)
B(6,7) —-> (x2,y2)
gradien(m)
=> (y2 – y1) / (x2,x1)
=> (7 – 1) / (6 – 4)
=> 6 / 2
=> 3

B.)
C(-3,6) —–>(x1,y1)
D(1,10) ——>(x2,y2)
gradien (m)
=> (y2 – y1) / (x2 – x1)
=> (10 – 6 ) / ( 1 -(-3)
=> 4 / (1 + 3)
=> 4 / 4
=> 1

C.)
E(7,-4) ——->(x1,y1)
F(-2,-4) —–> (x2,y2)
gradien(m)
=> (y2 – y1) / (x2 – x1)
=> (-4 -(-4)) / (-2 – 7)
=> (-4 + 4) / (-9)
=> 0 / 9
=> 0 (tidak ada )

D.)
P( -5, -7) —–>(x1,y1)
Q(-8,2) ——> (x2,y2)
gradien (m)
=> (y2 – y1) / (x2 – x1)
=> (2 -(-7) / (-8 -(-5)
=> (2 + 7) / (-8 + 5)
=> 9 / -3
=> -3

no 5
(5a ,9 ) —-> (x1,y1)
(2a,3) —–> (x2,y2)
m = 1

m = (y2 – y1) / (x2 – x1)
1 = (3 – 9) / (2a – 5a)
1 = -6/-3a
1 = 2a
a = 2/1
a = 2
jadi nilai a adalah 2

"maaf kalau salah"