The point $(2,3)$ is first reflected in the straight line $y=x$ and then translated through a distance of 2…

The point $(2,3)$ is first reflected in the straight line $y=x$ and then translated through a distance of 2 units along the positive direction $X$-axis. The coordinates of the transformed point are
  1. $(5,4)$
  2. $(2,3)$
  3. $(5,2)$
  4. $(4,5)$

Solution

Let $P(2,3)$ be the given point and $Q$ be the reflection of point $P(2,3)$ about the line $y=x$. Then, the coordinates of $Q$ are $(3,2)$ Now, the point $Q$ is translated through a distance of 2 units along the positive direction of $X$-axis. Let the new position of $Q$ be $R$. Then, the coordinates of $R$ are $\begin{aligned} & R=(3+2,2) \\ & R=(5,2) \end{aligned}$

Asked in: AP EAMCET 2015

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