Lesson Notes By Weeks and Term - Junior Secondary School 2

SUBJECT: MATHEMATICS

CLASS:� JSS 2

DATE:

TERM: 2nd TERM

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WEEK SIX

TOPIC: LINEAR GRAPHS IN TWO VARIABLES, USING GRAPH TO SOLVE REAL LIFE SITUATIONS�

CONTENT

• Continuous graphs
• Graph of real life situations�
• Choosing scales.

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Continuous Graph: Graphs are used to show the relationship between two quantities.� A continuous graph is in the form of a continuous line and shows the relationship between the two quantities .

Worked Examples�

1. A student walked along a road at a speed of 120m per minute.��

��� Make a table of values showing how far the students has walked after 0,1,2,3,4,5, minutes

1. using the scale of 1cm to 1min on the horizontal axis and 1cm to 100m on the vertical axis, draw a graph of the information .
2. x. use the graph to find:
3. how far the students has walked after 2.6min.
4. how long it takes the students to walk 500m

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Solution�

��� y

��� 600

��� 500

��� 400

��� 300

��� 200

��� 100

��� � 0��� 1 � � 2� � 3 � 4 � 5 � 6� ��� x

��� Time(mins)

2. i.� The student has walked 310cm after 2.6min.
3. � the student takes about 4.5 in walk 500m

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EVALUATION�

1. A girl walks along a road at a speed of 100m per minute
2. Copy and complete the table

1. Using a scale of 2cm to 1min on the horizontal axis and�

��� New GeneralMathematics Bk. 2 chapt.4,pg 119-123

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