South Carolina, Common Core, Holt McDougal Course 2

1. Chapter 4 Lesson 3: Interpreting Graphs
November 4, 2013

2. Agenda
•
•
•
•
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•
Warm Up
4.3 Notes
Examples
Practice
Formative Assessment
HW:
– Math7: Txtbk PG: 235 12-24
– PA: Txtbk PG: 235 12-24

3. Bell Ringer
• Alessia walked to the store to buy some
groceries. Tell whether her position in
each story is best represented by a line
with positive, negative, or zero slope.
• 1. Alessia stopped to tie her shoe.
• 2. Alessia walked from home to the store.
• 3. Alessia ran home from the store.

4. Objective
• Learn to relate graphs to situations

5. • You can use a graph to show the
relationship between speed and time, time
and distance, or speed and distance.

6. 0
Speed
(mi/hr)
• The graph at the right
shows the varying speeds
at which Emma exercises
her horse. The horse
20
walks at a constant speed
for the first 10 minutes.
Its speed increases over
the next 7 minutes, and
then it gallops at a constant10
rate for 20 minutes. Then
1
0
2
0
3
0
4
0
• it slows down over the next 3 minutes and
• then walks at a constant pace for 10 minutes.
5
0
Time
(min)

7. .
The height of a tree increases over time, but
not at a constant rate. Which graph bests
shows this?
As the tree grows, its height increases and then reaches its maximum height.
Graph A shows the height of a tree not increasing but remaining constant.
Graph C shows the height of a tree increasing at a constant rate without
reaching a maximum height. The answer is graph B.

8. Reminders
• Chapter 4 Section A Quiz
TOMORROW!