Select the correct answer. What is the value of ?

Select the correct answer.

What is the value of ?

A. 7/8

B. 7

C. 8

D.7/2

Solution

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Correct option is

A

−2

A(3,1)B(5,P)C(7,−5)

If points A(x

1

,y

1

),B(x

2

,y

2

),C(x

3

,y

3

) are collinear then

ar(△ABC)=

2

1

[x

1

(y

2

−y

3

)+x

2

(y

3

−y

1

)+x

3

(y

1

−y

2

)]=0

2

1

[3[5+p)+5(−5−1)+7(1−p)]=0

15+3p−30+7−7p=0

4p=−15+7

4p=−8

p=−2

Step-by-step explanation:

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rx and sx

step-by-step explanation:

step-by-step explanation:

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