1. Page 70
A dilation has been performed enlarging Triangle ABE into Triangle ADC.
A dilation has been performed enlarging Triangle ABE into Triangle ADC.
Draw Rays through AC and AD from Center A.
Find the Scale Factor used in the dilation taking Triangle ABE into Triangle ADC.

2. Page 71
 Change the coordinates to those shown in red.
(2, 1.5)
(16, 12)
(12, 8)

3. Page 76 5 1 1 7 x y x y x First x value y First y value
FORMULA TO CALCULATE SLOPE
OF A LINE USING TWO POINTS
m = slope
x y
x y
1 1
2 2
x First x value
y First y value 1 1
x Second x value
y Second y value 2 2 5 1 7 1

4. Page 76
HINT: Look back to problem 11.2 on page 71.

5. Page 77 How did Mai calculate her slope of 6/4?
How did Elena calculate her slope of 1.5?

6. Page 78
If the dilation sends A to B, which way is the ray traveling?
If the dilation used a scale factor of 2, what did that do to the length from the center to A? C

7. Page 80

8. 3.
Page 82

9. Page 83