A rate is a ratio comparing two different units
Examples: Dollars/week
Miles/hour
Beats/second
Rate: Definition and Examples
Exploration Activity Reviewed
1. The line moves up the y axis 3 spaces.
2. Make the cat go as fast as possible.
3. Yes, if it has enough of a head start.
4. Parallel lines = same slope = same speed.
6. The intersecting lines shows where the cat catches the mouse.
7. 20 feet
8. The more vertical the line, the faster the animal.
Exploration Activity Reviewed
Answers Reviewed
Letter Slope (Rate of Change) Animal How did you calculate your answer?
A 130 feet2 second
Hare 430 – 300 = 130 feet
2 – 0 = 2 seconds
E Warthog
B Impala
420 feet4 seconds
Cheetah
D Sable
Answers Reviewed
Letter Slope (Rate of Change) Animal How did you calculate your answer?
A 130 feet2 second
Hare 430 – 300 = 130 feet
2 – 0 = 2 seconds
E 360 feet or 45feet
8 seconds second
Warthog 400 – 40 = 360 feet
8 – 0 = 8 secondsB Impala
420 feet4 seconds
Cheetah
D Sable
Answers Reviewed
Letter Slope (Rate of Change) Animal How did you calculate your answer?
A 130 feet2 second
Hare 430 – 300 = 130 feet
2 – 0 = 2 seconds
E 360 feet or 45feet
8 seconds second
Warthog 400 – 40 = 360 feet
8 – 0 = 8 seconds
B 180 feet or 90 feet
2 seconds 1 second
Impala 360 – 180 = 180 feet
2 – 0 = 2 seconds
420 feet4 seconds
Cheetah
D Sable
Answers Reviewed
Letter Slope (Rate of Change) Animal How did you calculate your answer?
A 130 feet2 second
Hare 430 – 300 = 130 feet
2 – 0 = 2 seconds
E 360 feet or 45feet
8 seconds 1 second
Warthog 400 – 40 = 360 feet
8 – 0 = 8 seconds
B 180 feet or 90 feet
2 seconds 1 secondImpala 360 – 180 = 180 feet
2 – 0 = 2 seconds
C 420 feet4 seconds
Cheetah 420 – 0 = 420 feet
4 – 0 = 4 secondsD Sable
Answers Reviewed
Letter Slope (Rate of Change) Animal How did you calculate your answer?
A 130 feet2 second
Hare 430 – 300 = 130 feet
2 – 0 = 2 seconds
E 360 feet or 45 feet
8 seconds 1 second
Warthog 400 – 40 = 360 feet
8 – 0 = 8 seconds
B 180 feet or 90 feet
2 seconds 1 second
Impala 360 – 180 = 180 feet
2 – 0 = 2 seconds
C 420 feet4 seconds
Cheetah 420 – 0 = 420 feet
4 – 0 = 4 seconds
D 200 feet or 50 feet
4 seconds 1 second
Sable 320 – 120 = 200 feet
4 – 0 = 4 seconds
1. The change in y compared to change in x.
2. The Impala is 2nd fastest.
3. The Sable and the Warthog.
Answers Reviewed