คำศัพท์คณิตศาสตร์
TOPIC Linear equations and straight line graphs
An equation can be represented by graph.
Three is a relationship between the equation and the shape of the graph.
A linear equation of the form y = mx + c can be represented by a straight line graph.
m determines the gradient of the straight line and c determines where the graph intercepts the y axis.
Investigation of graphs of linear equations
Write on the board:
The y number is the same as the jt number plus 1. Ask students to write down three pairs of co-ordinates which follow this rule. Plot the graph.