Question

16(b). Which of the following is the value of(-4)×[(-5)+(-3)] ​

Answer 1

Step-by-step explanation:

hlo mate here's your answer

Given: A(a,3),B(2,1) and C(5,a) are collinear.

∴

Slope of

AB=

Slope of

BC

⇒

2 − a

1 − 3

=

5 − 2

a − 1

⇒

2−a

−2

=

3

a−1

⇒

−6=

(2−

a)(a−

1)

⇒

−6=

2a−

2−

a 2

a

⇒

a 2

3a−

4=

0

⇒

a 2

4a+

a−

4=

0

⇒

(a−

4)(a+

1)=

0

a=

4,−1

For

a=

4

Slope of

BC=

5 − 2

a − 1

=

3

4−1

=

3

3

=

1

Equation of

BC;(y−

1)=

1(x−

2)

⇒

y−

1=

x−

2

⇒

x−

y=

1

For

a=

−1

Slope of

BC=

5 − 2

a − 1

=

3

−1−1

=

−

3

2

Equation of

BC:

(y−

1)=

−

3

2

(x−

2)⇒

3y−

3=

4−

2x

⇒ 2x+ 3y= 7

I hope its help you mark as brainlist plz

Answer 2

Step-by-step explanation:

your answer is in the attachment