These lines are always of the form x c where c is some number. Express the equation using either the general form or the slope-intercept form of the equation of a line. A slope can also be found to be undefined with the other formula for finding the gradient m of a straight line m tan th.
If the line has an undefined slope and passes through the point 23 then the equation of the line is x2.
The equation of the line is Type an equation. As a vertical line will always make an angle the size of of 90 with the positive direction of the x -axis. Therefore the slope of the line in question is. In this tutorial learn about the meaning of undefined slope.