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When the coefficient of x is positive the line what?
Has a positive gradient (in a y=mx+c graph)
What word describes the slope of the line passing through the points 12 9 and 2 3?
If the line passing through these points is a straight line then it has a positive gradient.
What is approximate gradient?
The gradient of a line is the same as the slope of a line. It will tell someone measuring the line how straight the line is.
How do you compound error for physics A2 coursework?
If plotting a graph and are producing a straight line to find a gradient: You plot a line of best fit, then you plot two other lines starting from the same point which show the extreme lines of best fit (do this in fainter lines so that the best one stands out). Find the gradients for all three lines, use the first line that you drew as the main value. Then find the largest difference between the middle line and the extreme lines E.g. if the gradient of the lines were: First line gradient = 1.2 Second (Top extreme line of best fit) gradient =1.5 Third (Minimum extreme line of best fit) gradient = 1.0 Find the larget difference: 1.5-1.2=0.3 1.0-1.2=-0.2 Therefore the largest difference is 0.3 (not 0.2) Therefore your final result would be: 1.2 (+-) 0.3 I hope this helps :D
How do you find gradient of a trend line?
Gradient is vertical rise / horizontal travel. If its derived from a mathematical expression, use differential calculus. If its a data driven ( hand drawn ) line, use best approximation tangent at point required.
