1. Warm-up ~ Welcome!! 2) Write the rule for the following transformation
1) Given STR , write the new ordered pairs after T(5, -3)
S(-6, 8) T(3, 5) R(2, -7)

2. Last minute review from yesterday (no need to write this down)…

3. A transformation is described as
(x , y) ⇒(x + 2 , y - 3). What type of 
transformation is this?: A
translation B
rotation C
dilation D
reflection

4. A transformation is described as
(x , y) ⇒(-x, y). What type of 
transformation is this?: A
translation B
rotation C
dilation D
reflection

5. A transformation is described as
(x , y) ⇒(2x, 2y). What type of 
transformation is this?: A
translation B
rotation C
dilation D
reflection

6. A transformation is described as
(x , y) ⇒(y, -x). What type of 
transformation is this?: A
translation B
rotation C
dilation D
reflection

7. a. 4 units to the left, 2 units down:
Use coordinate notation to describe each translation:
a. 4 units to the left, 2 units down:
(x , y) ⇒(x - 4, y - 2)
b. 2 units to the right, 1 unit down:
(x , y) ⇒(x + 2, y - 1)

10. Reflections
Day 2

11. Let’s do a little discovery activity…

12. Using the rules you just found reflect each of the following and state the new coordinates.
1. J(-4, 3) U(8, 0) A(-2, -7) N(3, -5)
reflect over the x-axis
b) reflect over the y-axis

13. Time for some practice
across the x-axis
across the y-axis

14. across the y-axis
across the x-axis

15. Let’s try it with some points…
5. D(2, -3) E(1, 4) N(9, 12) over the y-axis 6. T(-4, 19) H(3, 13) A(5, -6) W(-6, -8) over the x-axis

16. What if we were reflecting over y=x?
Algebraic Rule:
_________________

17. One more example…

18. What if we reflected over other lines?
Lets create the quadrilateral ACBD with points A(2, 1), B(3,4), C(5, 1), and D(1, 4). Now…
Reflect over the line y = 2.
New Points: A’ B’ C’ D’
Reflect over the line x = -1.
New Points: A’ B’ C’ D’