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` 9` `"""`
`10` `Examples for the epytext manual.`
`11` `"""`
`12` `__docformat__``=``'epytext'`
`13` ` `
`15` ` ``"""`
`16` ` Return the x intercept of the line M{y=m*x+b}. The X{x intercept}`
`17` ` of a line is the point at which it crosses the x axis (M{y=0}).`
`18`
`19` ` This function can be used in conjuction with L{z_transform} to`
`20` ` find an arbitrary function's zeros.`
`21`
`22` ` @type m: number`
`23` ` @param m: The slope of the line.`
`24` ` @type b: number`
`25` ` @param b: The y intercept of the line. The X{y intercept} of a`
`26` ` line is the point at which it crosses the y axis (M{x=0}).`
`27` ` @rtype: number`
`28` ` @return: the x intercept of the line M{y=m*x+b}.`
`29` ` """`
`30` ` ``return` `-``b``/``m`
`31` ` `
`37` ` `