Page 126 - STEPS MATHEMATICS 4A

Drawing a graph

These parts of 8 thermometers show the outdoor temperatures reobrded every
hour on 13 January. ^ ; : .-.'/.•'

q - q c - q d • q e - q f
- 8
8 - 8
7 - 7 - 7 - 7 - - 7
- 6
- 6
6 - 6 - - 6
5 - 5 - 5 - 5 - - 5
4 - 4 - 4 - 4 - - 4
3 - 3 - 3 - 3 - - 3
2 - 2 - 2 2 - - 2
I - I - I - I _ - |
...j3 °c- - 0 °c- - 0 °c- - 0 'C- - 0
-2 --2 --2 --2
*-2 --3 -~3 -~5
--3
----5
•"4
•"4
-~4
•-5
--5
9am 10am 11 am noon
Copy and complete this table.
Time Gam 10am
Temperature
(°C)

Draw a line graph to show this inforr||ftion. Glue it inly^our book ||
if it is on loose paper. You might useflfe graph on pQpell 15 to help you.

a Write.5 questions you could ask someone about your graph.
b Under each question, write the answer.

CHALLENGE

Here are the temperatures taken hourly
from 9.00am to 4.00pm on a hot summer's day.

Design a line graph using these clues.

• The temperature was the same at 10am and
• It was 2°C cooler at 11 am than at noon.
• It was 5°C hotter at 2pm than at 4pm.
• It was 26°C at noon but 4°C hotter an hour later.
•At 4pm, the temperature was 4°C cooler than at noon
but 5°C hotter than at 9am.
• It was 3°C cooler at 10am than at 3pm.