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

**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�**

- 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

- 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 .
- x. use the graph to find:
- how far the students has walked after 2.6min.
- how long it takes the students to walk 500m

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**Solution�**

Time(min) | 0 | 1 | 2 | 3 | 4 | 5 |

Distance(m) | 0 | 120 | 240 | 360 | 480 | 600 |

��� y

��� 600

��� 500

��� 400

��� 300

��� 200

��� 100

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

��� Time(mins)

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

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**EVALUATION�**

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

Time(min) | 0 | 1 | 2 | 3 | 4 | 5 | 6 |

Distance(m) | 0 | 100 | 200 | � | � | � | � |

- 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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