Translations — Unit test Answers

Which rule describes the translation below?

The triangles on the grid below represent a translation.Which translation is shown on the grid?

Triangle PQR has coordinates P(–8, 3), Q(–8, 6), and R(–3, 6). If the triangle is translated by using the rule , what are the coordinates of triangle ?

Which triangle is a translation of triangle P?

The triangles on the grid below represent a translation.To form the image, the pre-image moved

On a coordinate plane, point B(–6, 1) is translated to (–3, –2). Indira uses these steps to find a rule to describe the translation.Step 1Substitute the original coordinates and the translated coordinates into :Step 2Write two equations:Step 3Solve each equation:Step 4Write the translation rule:Which corrects Indira’s first error?

Ryan wants to describe the translation shown on the grid below.Ryan uses the following steps to describe the translation.Step 1Identify the pre-image and the image:The pre-image is triangle XYZ, and the image is .Step 2Identify the number of units that each point moves horizontally:Each point moves one unit left.Step 3Identify the number of units that each point moves vertically:Each point moves three units down.Step 4The translation is one unit left and three units down.In which step did Ryan make the first error?

Triangle A is the pre-image in a translation, and triangle B is the image, as shown below.How was triangle A translated?

A triangle is translated by using the rule . Which describes how the figure is moved?

The point (4, 5) is translated two units left and eight units down. What is the y-coordinate of the image?

An object is placed in front of a plane mirror. The reflected image of the object will be a

The energy of microwaves is less than the energy of ultraviolet light. Which comparison of the energies of electromagnetic waves is correct?

The diagram below illustrates the law of reflection. Which is the angle of reflection?

Jin has four colorful glass bottles on his windowsill. One is red, one is violet, one is green, and one is yellow. The light that passes through which bottle has the lowest frequency?

Which materials can be used to make fiber optic strands?

Which part of the electromagnetic spectrum has the longest wavelengths?

A clothing manufacturer uses lasers to cut patterns in fabric when making T-shirts.

Which best describes what happens when light traveling through air enters water at an angle?

Where do the three rays in a ray diagram start?

How does a convex mirror form an image?