how do you find speed from a graph? distance (km) time (hr.)
TRANSCRIPT
How do you find speed from
a graph?
Dis
tance
(km
)
Time (hr.)
x
y
In this lesson you will learn to find a unit rate by using a
graph.
Let’s ReviewLet’s Review
$6 for 2 pounds
Weight (lb.)
Cost ($)
2
4
6
6
1218
Cost
($
)
Weight (lb.)
How many dollars for 1 pound?
Unit rate: $3 per pound
Let’s ReviewA Common Mistake
Unit Rate = # of
dependent variable per
1 of the independent
variable
Cost
($
)
Weight (lb.) dollars per 1 pound,not pounds per 1 dollar
Let’s ReviewCore Lesson
12
Cost
($
)
Weight (lb.)
Weight (lb.)
Cost ($)
2
3
45
6
1 3
6
9
1215
18
3
Let’s ReviewCore Lesson
What’s the unit rate?
Dis
tance
(km
)
Time (hr.)
x
y
Answer:2 km per hr.
Let’s ReviewCore Lesson
What’s the unit rate?
Dis
tance
(m
i.)
Time (hr.)9 10 11
28
30
32
Answer:3 mi. per hr.
Let’s ReviewCore Lesson
What’s the unit rate?(one tick
mark equals one unit)
Cost
($
)
Weight (lb.)
Answer:$4 per lb.
In this lesson you have learned to find a unit rate by using at a
graph.
Let’s ReviewGuided Practice
x
y
What’s the unit rate?
Dis
tance
(m
i.)
Time (hr.)
Let’s ReviewGuided Practice
7 8 9
14
16
18
12
Dis
tance
(ft
.)
Time (min.)
What’s the unit rate?
Let’s ReviewGuided Practice
What’s the unit rate?(one tick
mark equals one unit) C
ost
($
)
Weight (oz.)
Let’s ReviewExtension Activities
Find the unit rate from a graph when the rate is a non-integer.
x
y
Cost
($
)
Weight (oz.)
Let’s ReviewExtension Activities
Find the unit rate from a graph when the rate is a non-integer (harder).
Cost
($
)
Weight (oz.)
(one tick mark equals
one unit)
Let’s ReviewQuick Quiz
x
y
What’s the unit rate?
Cost
($
)
Weight (lb.)
Let’s ReviewQuick Quiz
8 9 10
28
32
36
24D
ista
nce
(ft
.)
Time (min.)11 12
What’s the unit rate?