Transformations

What is a reflection?

• When you turn an object around a point.
• When you slide an object form one place to another.
• When you flip or mirror an object across a line.
• When you resize an object.

Which answer shows a reflection across the x-axis?

• a
• b
• c
• d

Which answer shows a reflection across the y-axis?

• a
• c
• d
• b

Triangle GHI is reflected across the x-axis.  What are the coordinates of I'?

• (-2, 6)
• (2, 6)
• (-6, -2)
• (6, 2)

What is the rule for the following reflection? 

• Reflection across       y = −1
• Reflection across        y = 1
• Reflection across            x = −1
• Reflection across          x = 1

Is the reflection shown a reflection over the x or y axis?

• x axis

• y axis

Is the reflection shown a reflection over the x or y axis?

• x axis

• y axis

The original figure prior to a transformation.

• Pre-image
• Image

The result of a transformation.

• Pre-image
• Image

What does a translation do to a figure on the coordinate plane?

• Rotates it
• Flips it
• Shrinks it
• Slides it