Slope Formula
Find the slope of the line connecting the points...
(1,1) and (2,2)
m=1
Find the slope of the line connecting the points...
(1,2) and (3,4)
m=1
Original: (2,2) New Image:(5,5). What is the scale factor?
2.5
Does a dilation of 5/3 shrink or enlarge the figure
Enlarge
A line that goes "up and to the left" has a _____________ slope.
Negative
Find the slope of the line connecting the points...
(-1,10) and (2,10)
m=0
Find the slope of the line connecting the points...
(5,-4) and (2,2)
m=-2
Original: (7,8) New Image: (56,64)
What is the scale?
8
Angle B is 72 degrees after a dilation of 1/2 what is the measure of Angle B
72 degrees
True or False: Slope is "rise over run"
True
Find the slope of the line connecting the points...
(0,-7) and (10,9)
m= 8/5
Find the slope of the line connecting the points...
(-1,12) and (-4,-6)
m=6
Original: (6,3) New Image: (2,1)
.3(repeated) or 1/3
A dilation is a ______ that changes the _____ but not the shape of a geometric figure.
transformation; size
How many quarters are in $70
280
Find the slope of the line connecting the points...
(-7,-8) and (-11,-9)
m= 1/4
Find the slope of the line connecting the points...
(12,-14) and (2,0)
m= -7/5
K,L,M,N is dilated to a scale factor of 2 K(4,1) , K'(_,_)
(8,2)
what is the scale factor if the original and new image congruent?
1
The point of you dilate from is called
The Center of Dilation
Find the slope of the line connecting the points...
(-10.4,11) and (-10.4,-11)
Undefined
Find the slope of the line connecting the points...
(145,101) and (137,113)
m= -3/2
Original: (53.7,35.8) New Image: (161.1,107.4)
3
Original: (46,37) Image: (23,18.5)
0.5 or 1/2
What doesn't change in a dilation?