Question

Tolong dijawab no 20&21

Answer 1

Verified answer

2. D
cek y + 3x -7= 0→ y = -3x +7 ,,gradien -3
cek titik (2,1) = y+3x = 7 → 1 + 6 = 7

21. D
5x -2y= -20
→ -2y = -5x -20
→ y = 5/2 x +10
jadi gradiennya 5/2

Answer 2

====JAWABAN====

21) D
y - y¹ = m ( x - x¹ )
y - 2 = -3 (x - 2 )
y - 2 = -3x + 6
y + 3x -6 -2 = 0
y + 3x - 7 = 0

22) D
5x-2y = -20
-2y = -5x -20
y = 5/2 + 10
jadi gradiennya = 5/2