# Lesson Notes By Weeks and Term - Junior Secondary School 2

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

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

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)

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

EVALUATION

1. A girl walks
2. Copy and complete the tableborder="1" style="width: 400px;">
3.  Time(min) 0 1 2 3 4 5 6 Distance(m) 0 100 200

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

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