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titik:(2,3)
x:2
y:3
a)m=2
y=m(x)+c
3=2(2)+c
3=4+c
-c=4-3
-c=1
c=-1
persamaan garis:
y=m(x)+c
y=2(x)+(-1)
y=2x+(-1)
y=2x-1
b)m=-2
y=m(x)+c
3=-2(2)+c
3=-4+c
-c=-4-3
-c=-7
c=7
persamaan garis:
y=m(x)+c
y=-2(x)+7
y=-2x+7
c)m=½
y=m(x)+c
3=½(2)+c
3=1+c
-c=1-3
-c=-2
c=2
persamaan garis:
y=m(x)+c
y=½(x)+2
y=½x+2
d)m=-½
y=m(x)+c
3=-½(2)+c
3=-1+c
-c=-1-3
-c=-4
c=4
persamaan garis:
y=m(x)+c
y=-½(x)+4
y=-½x+4
mohon maaf bila salah