A point $P (3, - 2)$ is reflected in the origin as $P^{'}$ . Point $Q (- 7, 1)$ is reflected in the x- axis as $Q^{'}$ . Write down the co-ordinates of $P^{'}$ and $Q^{'}$ . $[2 M a r k s]$

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Solution

When a point is reflected in the origin, the sign of its ordinate and abscissa changes. Hence, the coordinates of $P^{'}$ are $(- 3, 2)$ . $[1 M a r k]$

When a point is reflected in the x axis, the sign of its ordinate changes. Hence, the coordinates $Q^{'}$ are $(- 7, - 1)$ . $[1 M a r k]$

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[2 M a r k s]

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A point P(3,−2) is reflected in the origin as P′. Point Q(−7,1) is reflected in the x- axis as Q′. Write down the co-ordinates of P′ and Q′. [2 Marks]

When a point is reflected in the origin, the sign of its ordinate and abscissa changes. Hence, the coordinates of P′ are (−3,2). [1 Mark] When a point is reflected in the x axis, the sign of its ordinate changes. Hence, the coordinates Q′ are (−7,−1). [1 Mark]

A point $P (3, - 2)$ is reflected in the origin as $P^{'}$ . Point $Q (- 7, 1)$ is reflected in the x- axis as $Q^{'}$ . Write down the co-ordinates of $P^{'}$ and $Q^{'}$ . $[2 M a r k s]$

When a point is reflected in the origin, the sign of its ordinate and abscissa changes. Hence, the coordinates of $P^{'}$ are $(- 3, 2)$ . $[1 M a r k]$

When a point is reflected in the x axis, the sign of its ordinate changes. Hence, the coordinates $Q^{'}$ are $(- 7, - 1)$ . $[1 M a r k]$