Multiple choice

The perpendicular distance of point (– 7, 9) from the y–axis is ______.

  1. – 7 units

  2. 7 units

  3. 9 units

  4. – 9 units
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The perpendicular distance from y–axis of any point is x co-ordinate but distance is always positive. So, the perpendicular distance of (– 7, 9) from y–axis is 7 units.

AI explanation

The perpendicular distance of any point from the y-axis is simply the absolute value of its x-coordinate, regardless of sign. For the point (-7, 9), the x-coordinate is -7, so the distance is |-7| = 7 units.

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