Unit 4 - Transfromations

Which images correctly shows a reflection over the y-axis.

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• 
• 

What is the transformation of ​AB ​ that results in ​A'B'?

• AB is rotated counterclockwise 90 degrees about the origin to form A'B'

• AB is translated 2 units right and 1 unit 1 to form A'B'

• AB is reflected across the x-axis to form A'B'

• AB is reflected across the y-axis to form A'B'

(x, y) -------> (x, -y) is a reflection over the x axis.       

• True
• False

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

(x, y) -------> (x - 3, y) is a translation of 3 units to the left.   

• True
• False

Tags

CCSS.HSG.CO.A.5

CCSS.8.G.A.3

If the dotted figure is the image, the original figure was reflected over the ...

• x-axis
• y-axis

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

If the dotted figure is the image, the original figure was reflected over the ...

• x-axis
• y-axis

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Triangle ABC will be dilated by a scale factor of 1/2.  What will be the coordinates of C'?

• (-1, -2.5)
• (12, 6)
• (3, -1.5)
• (0, 1.5)

Tags

CCSS.8.G.A.3

CCSS.8.G.A.4

Enlargement or reduction?  Find the scale factor!

• It's a reduction; the scale factor is 2.
• It's an enlargement; the scale factor is 2.
• It's an enlargement; the scale factor is 1/2.
• It's a reduction; the scale factor is 1/2.

Tags

CCSS.8.G.A.3

CCSS.8.G.A.4

If the scale factor is greater than 1, the dilation is...

• an enlargement
• a rotation
• a translation
• a reduction

Tags

CCSS.8.G.A.3

CCSS.8.G.A.4

If the scale factor is less than 1, the dilation is...

• an enlargement
• a translation
• a rotation
• a reduction

Tags

CCSS.8.G.A.3

CCSS.8.G.A.4