1. Warm ups Find the slope: (2,1) (8,9) (7,-8) (14,-6) (-4,-1) (-2,-5)
Answers:
4/3
2/7 -2
Zero
Undefined
Find the slope:
(2,1) (8,9)
(7,-8) (14,-6)
(-4,-1) (-2,-5)
(4,1) (-4,1)
(3,2) (3,-2)

2. Interpreting Distance Time Graphs
Objective: To interpret distance time graphs

7. Now it’s YOUR turn With a partner: Each person write a story Switch
Draw a graph of your partners story

8. Now it’s YOUR turn With a partner: Each person draw a graph Switch
Write a story that matches your partners graph

9. Matching a Graph to a Story
A. Tom took his dog for a walk to the park. He set off slowly and then increased his pace. At the park Tom turned around and walked slowly back home.
B. Tom rode his bike east from his home up a steep hill. After a while the slope eased off. At the top he raced down the other side.
C. Tom went for a jog. At the end of his road he bumped into a friend and his pace slowed. When Tom left his friend he walked quickly back home.

10. A. Tom took his dog for a walk to the park
A. Tom took his dog for a walk to the park. He set off slowly and then increased his pace. At the park Tom turned around and walked slowly back home.
B. Tom rode his bike east from his home up a steep hill. After a while the slope eased off. At the top he raced down the other side.
C. Tom went for a jog. At the end of his road he bumped into a friend and his pace slowed. When Tom left his friend he walked quickly back home.
Explaining the match
P-10

11. Homework
What kind of monkey can fly?

12. 6-1 Slope (old lesson)
Objective: To find a missing coordinate given two points and the slope.

13. Example 1 Find the missing coordinate (r) 3 = r – (-3) 4 7 – (-1)
(-1,-3) (7, r) m = ¾
3 = r – (-3)
– (-1)
3 = r + 3
4(r + 3) = 3(8)
4r + 12 = 24
4r = 12
r = 3
x1 y x2 y2
m = y2 – y1
x2 – x1
**This is a proportion
Cross multiply!

14. Example 2 Find the missing coordinate (r) -2 = -5 – (-1) 1 r – (-4)
(-4,-1) (r, -5) m = -2
-2 = -5 – (-1)
1 r – (-4)
-2 = -4
r + 4
-2(r + 4) = 1(-4)
-2r – 8 = -4
-2r = 4
r = -2
x1 y x2 y2
m = y2 – y1
x2 – x1
**This is a proportion
Cross multiply!

15. TOO Find the missing coordinate (r) -1 = 4 – r 2 10 – (-2) -1 = 4 - r
(-2,r) (10,4) m = -1/2
-1 = 4 – r
– (-2)
-1 = 4 - r
2(4 – r) = -1(12)
8 – 2r = -12
-2r = -20
r = 10
x1 y x2 y2
m = y2 – y1
x2 – x1
**This is a proportion
Cross multiply!

16. Example 3 Find the missing coordinate (r) 2 = 6 – r 1 r – 12
(12,r) (r,6) m = 2
2 = 6 – r
1 r – 12
1(6 – r) = 2(r – 12)
6 – r = 2r – 24
6 = 3r – 24
30 = 3r
r = 10
m = y2 – y1
x2 – x1
x1 y x2 y2
**This is a proportion
Cross multiply!
Combine like terms

17. Homework
Pg. 330 #30-38
Show all of your work 

18. ZONK
Let’s the games begin!!