ABSTRACT
Application: Determine the gradient of the straight-line graph passing through the co-ordinates ( 2, 5) and (3, 4)
A straight line graph passing through co-ordinates (x 1, y 1) and (x2 , y 2 ) has a gradient given by:
m
y y x x
A straight line passes through ( 2, 5) and (3, 4), from which, x1 2, y 1 5, x 2 3 and y 2 4, hence
gradient, m y y x x ( )
4 5 3 2
1 5
Application: The temperature in degrees Celsius and the corresponding values in degrees Fahrenheit are shown in the table below.
