2/3 a - 4/5 b + 3/5 c, -3/4 a 5/2 b + 2/3 c, 5/2 a + 7/4 b - 5/6 c
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Answered by
2
Answer:
I don't know
Step-by-step explanation:
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Answered by
1
Answer:
The given points are A(x
1
,y
1
)=(7,8),B(x
2
,y
2
)=(−5,2) and C(x
3
,y
3
)=(3,6).
Now if 3 points A(x
1
,y
1
),B(x
2
,y
2
) and C(x
3
,y
3
) are collinear, then slope m
AB
=slopem
BC
= slope m
AC
Slope m
AB
=
x
2
−x
1
y
2
−y
1
=
−5−7
2−8
=
2
1
Slope m
BC
=
x
3
−x
2
y
3
−y
2
=
3+5
6−2
=
2
1
and slope m
AC
=
x
3
−x
1
y
3
−y
1
=
3−7
6−8
=
2
1
Therefore, slope m
AB
= slope m
BC
= slope m
AC
Therefore, the points A,B and C are collinear.
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