3. Choose the two correct transformations for: RSTU to...

3. Choose the two correct transformations for: RSTU to R'S'T'U'. A Rotation 180°clockwise B Reflection across y = x C Reflection across y = -x D. Rotation 180°counter clockwise 4. Describe the transformation used for: CDEF to C'D'E'F'. A Reflection across the y-axis B Reflection across y = -1 C Reflection across x = -1 D Reflection across the x-axis 5. Choose the two transformations for: HIG to H'I'G'. A Rotation 90°clockwise B Reflection across y = x C Reflection across y = -x D Rotation 270°counter clockwise 6. Describe the transformation used for: RST to R'S'T'. A Reflection across the x-axis. B Reflection across the y-axis C Rotation 180° clockwise D Reflection across y = x

Transcript

00:01 Let's take a look at these transformation questions right here.

00:04 So in number three, choose two correct transformations for the following.

00:09 So i'm looking at these.

00:10 Please pay attention to the order of the letters, not only right here in the statement, but on the diagram as well.

00:17 You're going to notice that right here, for example, s prime is down here, and s is up here.

00:26 So this isn't just a simple reflection.

00:28 You've got to really pay attention to that.

00:30 One of the things that i noticed, in order for s to end up on s prime, a little trick is if you want to look at the 180 degree rotation, you should be able to draw a straight line connecting to s to s prime, u to u prime, r to r prime, r to r prime, you to you prime, and t to t prime.

00:56 You're going to notice that they all go through the origin and we're creating straight lines.

01:00 So that would be choice a and choice d.

01:04 Rotation of 180 degrees clockwise or counterclockwise.

01:08 It really doesn't matter with 180 degrees.

01:11 Number four, describe the transformation used for cedf to c prime, d prime, e prime, f prime.

01:18 Pay attention to the letters.

01:19 I notice right here that d and d prime line up c and c prime, f and f prime.

01:27 So when i noticed that, i can see that it had to be a reflection.

01:31 Now, what was it a reflection over? it looks like i could draw my line of reflection right here.

01:38 Remember, your line of reflection is the perpendicular bisector of the line that connects your old point to your new point.

01:46 So that line is a vertical line...

Question

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