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You can put this solution on YOUR website!
of a straight line? Pick 2 points on the line, call them A and B with coordinates (a,b) and (c,d) respectively.\r
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\n" ); document.write( "\n" ); document.write( "Gradient is DEFINED as (change in y)/(change in x) so we have (b-d)/(a-c) OR we could have done (d-b)/(c-a). It does not matter which way you do it, just decide and stick to it. DO NOT do (b-d)/(c-a) etc.\r
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\n" ); document.write( "\n" ); document.write( "Pick one coordinate and go to the other for both x and y calculations.\r
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\n" ); document.write( "\n" ); document.write( "If you have a curve, then you need to know at which point you need to find the gradient. Once you have been told, you need to draw a tangent to the curve at that point. This is a VERY subjective thing to do. In other words, it is open to a wide variety of possible tangents that people draw. \r
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\n" ); document.write( "\n" ); document.write( "Once you have your tangent (a straight line at that point that only touches the curve at that point) you repeat the process i mentioned first.\r
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