himpunan penyelesaian spldv dari y = -x + 4 dan y = -2x - 5

Kelas 8 Matematika
Bab SPLDV

y = y
-x + 4 = -2x - 5
2x - x = -5 - 4
x = -9

y = -x + 4
y = - (-9) + 4
y = 13

HP = { (-9, 13) }

y = - x +4
y = - 2x - 5
.....................-
0 =x +9
x =-9

y = - x +4 = -(-9)+4 =13

HP ={-9,13}