 
Simult ax+by=c
Given the coefficients a, b and c of
two linear equations, both in the form ax+by=c, this program will give the
point of intersection. 




Simult y=mx+c
Given the coefficients m and c of two
linear equations, both in the form y=mx+c, this program will give the
point of intersection. 




y=mx+c (2pts)
Given two points in the form (x,y),
this program will give the equation of the line passing through them. 




y=mx+c (m&1pt)
Given one point in the form (x,y) and a
gradient m, this program will give the equation of the line with that
gradient passing through the point. 




Perp. bisector
Given two points in the form (x,y),
this program will give the midpoint between them and the equation of the
perpendicular bisector. 




Simult 3x3
This program solves 3x3 systems of
simultaneous linear equations using a matrix (see also Matrices
section). The RREF function is used for this. (4,2,3)
For example:
x+y=6
2xz=11
3y+z=3 


If there is no solution or infinite
solutions to the system then the program reports this. For example,
changing the third equation to 2y+z=3 results in the "Infinite
solutions" message shown right, since it then becomes a linear
combination of the first two equations. 


