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-   -   gradient of y= -2x +8 ?? (http://mymathforum.com/calculus/32600-gradient-y-2x-8-a.html)

coachcft December 15th, 2012 06:07 AM

gradient of y= -2x +8 ??
 
Anyone know what the gradient means? Does it just simply mean the SLOPE (-2/1) ??

OR is it reffering to something else? If so, any info would be helpful. I did a quick search on wikipedia and Im stil stumped.

THANKS!!

MarkFL December 15th, 2012 07:02 AM

Re: gradient of y= -2x +8 ??
 
Yes, gradient and slope refer to the same thing with regards to functions.

HallsofIvy December 15th, 2012 12:25 PM

Re: gradient of y= -2x +8 ??
 
Note that for linear equations the "gradient" (I would say "derivative") is a constant and is the same as the slope of the line. For non-linear equations, the derivative at every point is equal to the slope of the tangent line at that point. That's some times used as the definition of "gradient".


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