Question

If the image of a point $P(2,3)$ in the line mirror $y=x$ is the point $Q$ and the image $Q$ in the line mirror $y=0$ is the point $R(x,y)$, then the coordinates of $R$ are

• A. $(3,2)$
• B. $(-2,3)$
• C. $(-3,-2)$
• D. $(3,-2)$

Answer 1

The correct option is D $(3,-2)$

Let the image of $P(2,3)$ in the line mirror $y=x$ be $Q$.
So, the coordinates of $Q$ are $(3,2)$.
Let the image of $Q(3,2)$ in the line mirror $y=0$ i.e x-axis is R.
So, the coordinates of $R$ are $(3,-2)$.