Question

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​

Answer 1

Answer:

I don't know

Step-by-step explanation:

i don't know

Answer 2

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.