Straight Line
- A straight set of points that continue on to infinity in both directions. A straight line on the xy plane is defined by the equation:
- where
- m = gradient
- c = intercept on y-axis
- When fitting a straight line to a set of experimental data the following may be applied to calculate the gradient (m) and y-axis intercept (c).
- When fitting a straight line to a set of experimental data the following may be applied to calculate the gradient (m) and y-axis intercept (c).
- For two straight lines defined as:
- and
- If m1=m2 the lines are parallel.
- If m1*m2=-1 the two lines are perpendicular.
See also: Intercept, Line, Line of Best Fit, Linear, Linear Regression, Pearson Product Moment Correlation Coefficient, Slope, Slope of a Linear Function.
Subjects: Mathematics