Mathematics 10c Unit 5 Student Worksheets With Answer Key Page 9
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48Linear Functions
y
- y
2
1
LESSON ONE - Slope of a Line
rise
m =
x
- x
2
1
Lesson Notes
run
Example 4
The equation relating distance and time is d = st, where s is the speed. In a physics experiment,
a motorized toy car drives across the floor and its position is measured every five seconds.
elapsed time
position
a) Graph the data
d
(seconds)
(metres)
10
0
0
9
5
0.9
8
10
1.8
7
15
2.7
6
20
3.6
5
25
4.5
4
30
5.4
3
35
6.3
2
40
7.2
1
45
8.1
50
9.0
t
5
10 15 20 25 30 35 40 45 50
b) Determine the speed of the car.
c) State the dependent and independent variables, then write an equation that relates the variables.
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