Lengkapi pasangan terurut untu tiap-tiap persamaan: a. y = -x+6;(9, ) b. y = 6x-7;(2, ) c. 2x - 15y =13 ( ,-3/4) d. -x + 12y =7; ( ,3/4)

a. y = -9+6 = -3 ==> (9, -3)

b. y = 6×2 - 7 = 12-7 = 5 ==> (2, 5)

c. 2x - 15×(-3/4) = 13
2x + 45/4 = 13
2x = 13 - 45/4
2x = 52/4 - 45/4
2x = 7/4
x = 7/8

==> (7/8 , -3/4)

d.
-x + 12×(3/4) = 7
-x + 36/4 = 7
-x + 9 = 7
-x = 7-9
-x = -2
x = 2

==> (2, 3/4)

a. y = -x+6;(9, )
Nilai x = 9 jadi X diganti 9
y = -9 + 6
y = -3
Jawabannya (9,-3)
b. y = 6x-7;(2, )
Nilai x = 2 jadi X diganti 2
y = 6(2) - 7
y = 12 - 7
y = 5
Jawabannya (2,5)
c. 2x - 15y =13 ( ,-3/4)
Nilai y = -3/4 jadi Y diganti -3/4
2x - 15 (-3/4) = 13
2x + 45/4 = 13
2x = 13 - 45/4
2x = (52-45)/4
2x = 7/4
x = 7/4 ÷ 2
x = 7/8
Jawabannya ( 7/8, -3/4 )
d. -x + 12y =7; ( ,3/4)
Nilai y = 3/4 jadi Y diganti 3/4
-x + 12 (3/4) = 7
-x + 9 = 7
-x = 7 - 9
-x = -2
x = 2
Jawabannya ( 2, 3/4 )

Semoga membantu ^^