A useful form of the equation of a straight line graph is \[y=mx + c\] where \(m\) is the gradient and \(c\) is the y-intercept.
Using the link below you can explore:
- The effect of changing \(m\)
- The effect of changing \(c\)
- The family of graphs of the form \(y = mx\)
- The family of graphs of the form \(y = x + c\)
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