Dilations, Translations Notations

Determine the rule if the object is translated X 3 units to the left and 9 units down.

• (X-9,Y+3)

• (X-9,Y-3)

• (X-3,Y-9)

• (X+3,Y-9)

How is trapezoid ABCD translated to trapezoid A'B'C'D'?

• Translated 5 units down and 5 units to the right
• Translated 5 units down and 1 to the right
• Translated 8 units down and 5 units to the right
• Translated 5 units down and 4 units to the right

What transformation is happening?

(x, y) ----> (x + 2, y - 3)

• 2 units to the left, 3 units up

• 3 units to the left, 2units up

• 2 units to the right, 3 units down

• 2 units to the left, 3 units down

A dilation is which of the following:

• (X+2, Y-3)

• (-X,-Y)

• (2X,2Y)

• Neither an enlargement or a reduction

What is the scale factor if the triangle on the left is the original?

• 2
• 3/2
• 2/3
• 1/2

A triangle has vertices with coordinates (2,0), (3, -1) and (-2,-5). If the triangle is dilated by a scale factor of 3 with the origin as the center of dilation, what are the coordinates of the vertices of the image?

• (5,3), (6,2), (1,-2)
• (6,0), (9,-3), (-6,-15)
• (2/3,0), (1,-1/3), (-2/3,-5/3)
• (-1,-3), (0,-4), (-5,-8)

Dilate Point B by a scale factor of 1/2. Find the point of B':

• (1.5,-4)

• (-1.5,1)

• (-1,-1.5)

• (-2,-2)

A scale factor of less than one means

• that the image will be larger than the pre-image.
• That the image will be the same as the pre-image.
• That you need to subtract that amount off  of each side.
• That the image will be a reduction of the pre-image.

Determine how to translate triangle A'B'C' to triangle ABC.

• (x+2, y-5)
• (x+2, y-9)
• (x-2, y-9)

How do you represent a translation Algebraically? 

• (-y, -x)
• (x + a, y + b)
• (-x , -y)
• (ax, by)