Question

What will be the new position of the point (−8, 4) when rotated through 90° anti-

clockwise about the origin?

i. (−4, −8) ii. (−4, 8) iii. (4, 8) iv. (2, 4)

Answer 1

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• What will be the new position of the point (−8, 4) when rotated through 90° anti-clockwise about the origin?

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• I.(-4,-8)

Explanation:

In the given point(-8,4)

we have to rotate it up to 90° in anti clockwise about its origin

so,

(x,y)=(-y,x)

Hence,

The new position of the point (−8, 4) when rotated through 90° anti-clockwise about the origin is (-4,-8)

Answer 2

we have

(x,y). rotation through 90° anti-

clockwise about the origin(-y,x)

point (−8, 4) when rotated through 90° anti-

clockwise about the origin(-4,-8)

Option.i. (−4, −8)