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titik (2,-5)
a) y=2x gradiennya 2
pers garisnya...
y-k = m(x-h)
y - (-5) = 2(x-2)
y + 5 = 2x - 4
2x - y -9 =0
b) y=2/3x + 3 gradiennya 2/3
pers garisnya....
y - k = m(x-h)
y - (-5) = 2/3 (x-2)
y + 5 = 2/3x - 4/3
2/3x - y - 19/3 = 0 (biar bulet di kali 3)
2x - 3y - 19 = 0
c) 4x-3y-9=0 gradiennya -a/b = -4/-3 = 4/3
pers garisnya....
y-k = m(x-h)
y - (-5) = 4/3 (x-2)
y+5 = 4/3x - 8/3
4/3x - y - 23/3 = 0 (biar bulet dikali 3)
4x -3y -23 =0
d) x+4/3y-3/4=0 gradiennya -a/b = -1/4/3 = -3/4
pers garis....
y-k = m(x-h)
y - (-5) = -3/4(x-2)
y + 5 = -3/4x + 3/2
3/4x + y + 7/2 =0 (biar bulet dikali 4)
3x + 4y + 14 =0
semoga bisa membantuuu, kl salah didiemin aja