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A point Q $(m + 3, 2 m - 6)$ lies on the $y$ -axis. Find $m$ , and the ordinate of Q.

Class 9Points on the AxesCoordinate Geometry

Am = -3, ordinate = -12
Bm = 3, ordinate = 0
Cm = -3, ordinate = 0
Dm = 0, ordinate = -6

Step-by-Step Solution

On the

y

-axis the abscissa is 0:

m + 3 = 0 \Rightarrow m = - 3

. Then ordinate =

2 m - 6 = 2 (- 3) - 6 = - 12

.

Answer: A) m = -3, ordinate = -12

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