Answer:
A' = (-1,-9)
B' = (-5,-4)
C' = (8,-6)
Step-by-step explanation:
The reflection of points with respect to y = -1 i.e. a line parallel to y-axis will not change the x coordinates of the points.
Now, point A is given by (-1,7).
So, it's distance from y = -1 line is {7 - (- 1)}= 8 units.
Therefore, the reflection of point (-1,7) will be a point with coordinates [-1, (-1-8)] = (-1,-9)
The point B is given by (-5,2).
So, it's distance from y = -1 line is {2 - (- 1)}= 3 units.
Therefore, the reflection of point (-1,7) will be a point with coordinates [-5, (-1-3)] = (-5,-4)
Again, the point C is given by (8,4).
So, it's distance from y = -1 line is {4 - (- 1)}= 5 units.
Therefore, the reflection of point (8,4) will be a point with coordinates [8, (-1-5)] = (8,-6) (Answer)
