if the line gradient is ½ the the gradient of a perpendicular line will be -(1/(½) = -2

therefore in general the line with gradient m will have a pependicular line with gradient -1/m.

]]>The slant of a line is the same anywhere on the line.

This is not true for a more complicated curve. So the slope of the perpendicular line to this one is

three.]]>

gradient = -1/3

equation of a straight line: y = ax + b where a is a gradient.

]]>how do you find the gradient? and what is it?

thanks

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