Question

17. Find the value of 'y for which the distance between the points P (2.-3) and Q (10, y) is 10 units.​

Answer 1

Answer:

Distance between two point (x

1

,y

1

) and (x

2

,y

2

) is given by,

=

(x

2

−x

1

)

2

+(y

2

−y

1

)

2

10

2

=(y+3)

2

+(10−2)

2

(y+3)

2

=10

2

−8

2

(y+3)

2

=6

2

y+3=±6

∴y=3ory=−9