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

**SUBJECT: MATHEMATICS**

**CLASS: JSS 2**

**DATE:**

**TERM: 2nd TERM**

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.

**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

**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

**EVALUATION**

- A girl walks
- Copy and complete the tableborder="1" style="width: 400px;">
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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