1. ©G Dear 2010 – Not to be sold/Free to use
Applied Mathematic
(Preliminary Extension 1)
Straight
Line Graphs
Gradient given
an equation
Stage 6 - Year 11
Press Ctrl-A
©G Dear 2010 – Not to be sold/Free to use

2. Gradient Given An Equation
Gradient-Intercept form of an equation.
y = m
x + b
Example: y = 7x + 3
What is the gradient? 7
End of
Slide

3. Gradient Given An Equation
General form of an equation.
ax + by + c = 0
y = m
x + b
Example: 4x – 2y + 3 = 0
What is the gradient? 2
–2y = -4x - 3
y = 2x + 1.5
End of
Slide

4. Gradient Given An Equation
General form of an equation.
ax + by + c = 0
m = - a b
Example: 4x – 2y + 3 = 0
What is the gradient? 2
a = 4
m = - 4 -2
b = -2
= 2
End of
Slide