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y-y1=m(x-x1)
y-(4)=3(x-0)
y+4= 3x
y=3x-4
b.y-y1=m(x-x1)
y-2=1 1/2 (x-1)
y-2= -3/2x + 3/2
y= -3/2+3/2 +2
y= -3/2+7/2
c.y-y1=m(x-x1)
y-1=4 (x-(-2))
y-1=4x +8
y=4x+8+1
y=4x+9
d.cari Gradiennya Dlu(m)
m=y2-y1/x2-x1
m= -1-4/2-1
m= -5/1
m= -5
Dan masukin ke rumus:
y-y1=m(x-x1)
caranya sma
e.sma kaya yang D
m=y2-y1/x2-x1
m= -8-(-1)/3-0
m= -7/3
Dan masukin ke rumus:
y-y1=m(x-x1)
Setau Saya gitu :)