1A Equations and Coordinate Transformations

Which rule represents a translation by 4 units right, 3 units down?

• (4x, 3y)

• (x+4, y-3)

• (4x, -3y)

• (-x, y)

• (x, -y)

• (-x, -y)

• (y, -x)

Which rule represents a rotation by 90º counterclockwise around the origin?

• (-y, x)

• (y, -x)

• (-x, -y)

• (-y, -x)

Which rule represents the transformation of W to W'?

• (x+12, y-10)

• (-x, y)

• (-x, -y)

• (y, -x)

Which rule represents the transformation of V to V'?

If the point D is located at ( – 2, 6) and D’ is the image of D after being reflected over the y-axis, what are the coordinates of D’?

• D’( 2, 6)

• D’( – 2, – 6)

• D’( 2, – 6)

• D’( 6, – 2)

Which process stated below describe a dilation with a scale factor of 0.5 centered at the origin?

• Multiply both the x-coordinate and the y-coordinate of each point by 0.5

• Multiply only the x-coordinate by 0.5

• Multiply only the y-coordinate by 2

• Multiply both the x-coordinate and the y-coordinate by 2

Which process stated below describes a translation up 3 units?

• Add 3 to just the y-coordinate of each point to be translated.

• Add 3 to just the x-coordinate of each point to be translated.

• Subtract 3 from just the x-coordinate of each point to be translated.

• Subtract 3 from just the y-coordinate of each point to be translated.

What is the image of P ( 11, -4 ) using the translation:

( x, y ) → ( x - 17, y + 2 )?

• P' ( -6, -2 )

• P' ( 6, 2 )

• P' ( -11, 4 )

• P' ( -4, 11 )