How i solve the coordinate geometry questions easily . What is the best solution of exercise 7.1 , please help me to solve this question easily. Find the values of y for which the distance between the points P (2, – 3) and Q (10, y) is 10 units.
SonuNewbie
Find the values of y for which the distance between the points P (2, – 3) and Q (10, y) is 10 units. Q.8
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Given: Distance between (2, – 3) and (10, y) is 10.
Using distance formula,
Simplify the above equation and find the value of y.
Squaring both sides,
64 + (y + 3)2 = 100
(y + 3)2 = 36
y + 3 = ±6
y + 3 = +6 or y + 3 = −6
Therefore, y = 3 or -9.