Question

The reflection of the point P ( 1, -2 ) in the line y = - 1 is​

Answer 1

Answer:

imageofpoint(1,−2)intheline

n+1=0

⇒PN⊥AB

⇒SlopeofPQbem

⇒then,m×0=−1,m=0

EquationoflinePQ

⇒

x−1

y+2

=0,y+2=0,y=−2

⇒ABandPQintersectatpointN(−1,−2)then

⇒

2

x

1

+1

=−1

⇒x

1

=−3

⇒

2

y

1

−2

=−2

⇒y

1

=−2