Question

reflection of point p(1,-2) in the line y= -1​

Answer 1

Step-by-step explanation:

Reflection in the y -axis:

A reflection of a point over the y -axis is shown. The rule for a reflection over the y -axis is (x,y)→(−x,y) .

hope this helps.

Answer 2

Given:

The given point P = (1,-2)

The line through which point P has to be reflected y = -1

To find:

The reflection of point P in the line y.

Solution:

We need to keep this in mind that when a point is reflected on a particular line, its reflection is also equidistant from the given line. We can see from the diagram that the y-distance of the point from y=-1 line is -1, hence the reflection will also be on the same distance and will lie on (1,0).

Thus the reflection of point P in the line y will be (1,0).