Slopes

1
Slopes
2
Who skis the slopes?
What kind of slopes are there?
bunny circle diamond double diamond
3
You hope that the rating is based on how STEEP
the slope is
Don't you hope that rating is based on some
mathematical number?
4
(No Transcript)
5
As you change the x or y, the slope changes
y
x
6
Shortening the x made the slope steeper
y
x
7
Shortening the y direction made the slope less
steep
y
x
8
Positive Slope
9
Negative Slope
10
0 Slope
11
NO Slope
SPLAT
12
Both the x and y influence how steep the slope is.
13

• To find the slope you only need 2 points from the
  line.
• Find the distance between the ys (rise)
• Find the distance between the xs (run)
• Express as a FRACTION

14
Slope tells me how to get from one point to
another point (not the next)
15
Find 2 points on the line
5
(0,1)
7
(-5, -6)
16
Now by the formula
x y x y
(-5, -6)
(0, 1)
17
Find 2 points on the line
-7
(-2,-4)
3
(5, -7)
18
Now by the formula
x y x y
(-2, -4)
(5, -7)
19
(No Transcript)
20
There is a negative in your slope, so you will
have to go ONE negative direction, down or left?
I always choose down. Go up or down but always
go to the RIGHT
21
Point (-2,1) Slope -3
22
Point (4,-7) Slope
23
Point (-1,-2) Slope
24
Point (2,3) Slope 5
25
SINK the boat
Each group has a boat, your mission is to SINK
the other groups boats. You have to program the
torpedos by entering in the slope from your boat
to the other teams boat
26
1
2
3
4
5
27
1
2
3
4
5
28
1
2
3
4
5
29
1
2
3
4
5
30
1
2
3
4
5
31
1
2
3
4
5
32
1
2
3
4
5
33
1
2
3
4
5
34
1
2
3
4
5
35
1
2
3
4
5
36
Determine the value of r
This is the slope of the two points, but is
suppose to equal
37
Determine the value of r
38
5 r 2
-2 -2
3 r
39
Determine the value of r
40
-1
r 4 3
4 4
r 7
41
(No Transcript)