There are Task templates for each of these tasks, obtained with the following paths:

In addition there are Task templates for the point-slope and slope-intercept forms of the straight line:

For example, the template for the distance between two points gives

Similarly, the template for the equation of a line through two points gives

The functionality of the Line command is captured in the  tutor in the Precalculus grouping of tutors. Figure A-6.1(a)$$ provides a screenshot of the Line tutor initialized for this example.

The Student Precalculus package has commands for each of these: 

Notice the required [1] at the end of the Line command. Instead, [2] will give the slope while [3] and [4] will give the x- and y-intercepts, respectively. The arguments of the Line command can also be a point and the slope, or the slope and y-intercept, as done in the next example.