Question

The co-ordinates of the points on the number line are as follows.

Points	P	Q	R	S	T
Co-ordinates	-3	5	2	-7	9

Find the length of : seg PQ, seg PR, seg PS, seg PT, seg QR, seg QS, seg QT, seg RS, seg RT, seg ST

• A. PQ $=$ 8, PR $=$ 5, PS $=$ 4, PT $=$ 12, QR $=$ 3, QS $=$ 12, QT $=$ 4, RS $=$ 8, RT $=$ 7, ST $=$ 16
• B. PQ $=$ 8, PR $=$ 5, PS $=$ 4, PT $=$ 12, QR $=$ 3, QS $=$ 12, QT $=$ 4, RS $=$ 7, RT $=$ 7, ST $=$ 16
• C. Data insufficient
• D. None of these

Answer 1

The correct option is D None of these

Length of Segment
PQ = |-3| + |5 | = 8
PR = |-3| + |2 | = 5
PS = |-3| + |5 | = 8
PT = |-7| - | -3| = 4
QR = |5| - | 2| = 3
QS = |5| + | -7| = 12
QT = |9| - | 5| = 4
RS = |-7| + | 2| = 9
RT = |9| - | 2| = 7
ST = |-7| + | 9| = 16