Class LinearEquation

java.lang.Object
  |
  +--LinearEquation

public class LinearEquation

extends Object

A LinearEquation models equations of the form y = mx + b.

Version:

2

Constructor Summary

LinearEquation(double m, double b)
Construct a LinearEquation from a slope and y-intercept.

LinearEquation(double x1, double y1, double x2, double y2)
Construct a LinearEquation from two points.

Method Summary

double	compute(double x) Compute y, given x.
LinearEquation	getInverse() Compute the inverse of this linear equation.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

LinearEquation

public LinearEquation(double m,
                      double b)

Construct a LinearEquation from a slope and y-intercept.

Parameters:

m - the slope.

b - the y-intercept.

LinearEquation

public LinearEquation(double x1,
                      double y1,
                      double x2,
                      double y2)

Construct a LinearEquation from two points.

Parameters:

x1 - the x coordinate of the first point

y1 - the y coordinate of the first point

x2 - the x coordinate of the second point

y2 - the y coordinate of the second point

Method Detail

compute

public double compute(double x)

Compute y, given x.

Parameters:

x - the input value.

Returns:

the corresponding value of y: mx+b.

getInverse

public LinearEquation getInverse()

Compute the inverse of this linear equation.

Returns:

the LinearEquation object you get by "solving for x".