Slope of a straight line is the same at all points on the line, whereas for a curved line it changes.
Chat with our AI personalities
A linear relationship means that the slope of the line is proportional, which means that the line is straight. In contrast to the linear realtionship, the non-linear relationship's slope is not proportional and the line will curved and not straight. Formula of calculating the slope is the difference of y divided by the difference of x.
The slope of a curved line at a point is the slope of the tangent to the curve at that point. If you know the equation of the curve and the curve is well behaved, you can find the derivative of the equation of the curve. The value of the derivative, at the point in question, is the slope of the curved line at that point.
a straight line is mainly x2 a curved line is mainly x3
If it is not straight, then it is not a line.
No. This is true for any curved line, not just in economics.