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Opener:

1. Find the coordinates of the midpoint of PQ with endpoints P(‐8, 3) and Q(‐2, 7).

2. Find XM. X has coordinates (2, 7), and M has coordinates (6, 1).

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Extra Distance & Midpoint Practice:

1. If CD = 12 and C(4, ‐7) and D(2, y), what's the value of y?

2. If the midpoint of a segment is (8, ‐2) and one of the endpoints is (12, 6), what is the other endpoint?

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Homework Add‐On:

Choose at least 3 of the problems that you got deductions on from your quiz.

Write a new quiz problem that tests the same skill in a similar way (using a quadratic for example in #15).

Solve each problem, showing your work to demonstrate that you understand your mistakes.

If you do more than 3, you may receive some type of reward for your efforts... 

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Section 1.7: Transformations in the Coordinate Plane

Some vocabulary:

1. Transformation: a change in the position, size or shape of a figure

2. Preimage: the original figure

3. Image: the resulting figure after the transformation

4. Reflection: (flip) a transformation across a line

5. Rotation: (turn) a transformation about a point

6. Translation: (slide) a transformation where all points of a figure move the same distance in the same direction

7. Arrow Notation: a way of describing transformations ABC ‐‐> A'B'C'

8. Rule: descriptors for translations ‐ (x, y) ‐‐> (x + a, y + b)