1. Learning Log: On Desk: HW: p.70 #4-8 TwMM Quick Quiz – tomorrow!
Math CC7/8 – Be Prepared
Learning Log:
HW: p.70 #4-8
TwMM Quick Quiz – tomorrow!
Writing equations with given points
Retake available
TwMM Test – Fr. 5/4
On Desk:
Pencil
Calculator
Math Journal
Labsheet 3.1 A-B
Last night’s HW KEY
TwMM Learning Log
*Start correcting your HW with correcting pen!

2. Tasks for Today Warm Up – write an equation
Lesson 3.2 – Distance, Speed & Time

3. y = -0.5x + 5 Warm Up What tool or resource could you use?
Find the equation of the line that passes through the given points.
y = -0.5x + 5
(4, 3) and (8, 1)
What tool or resource could you use?

4. What did you notice yesterday about the relationship
between length and width?

7. Labsheet 3.2

9. This is an inverse variation!
As trip time increases, average speed decreases at a decreasing rate, causing a curved pattern of points.
This is an inverse variation!

10. t =
500 s
s =
500 t
st = 500 or or
Yes, this is an inverse variation!
It fits the form of an inverse variation.
As trip time increases, average speed decreases at a decreasing rate, causing a curved pattern of points.

11. What do you notice?
As average speed increases, travel time decreases at a decreasing rate.

12. t =
300 s
s =
300 t
st = 300 or or

13. In the graph of the (s, t) data the curve drops rapidly at first and then more slowly, indicating that equal increases in speed for the trip (mph) have greater effect when the starting speed is low.
A 5 mph increase from 30 to 35 is a much more significant increase than from 60 to 65.

14. Yes, the relationship between travel time and average speed is an inverse variation because the product of time and speed is constant in this situation.

15. Are you wondering something new now?
Learning
Check!
Are you wondering something new now?

16. Begin Homework p. 70 #4-8