Given that the value of b can never be equal to -1, how do you determine if the equations are intersecting, parallel, or coincident: #x+y=ab, bx-y=a#?
1 Answer
Nov 28, 2016
Check whether the Determinant is non-zero.
Explanation:
If the equations do not intersect into a unique equation, the Determinant will be zero.
From the reference, the determinate of the two equations is:
The only what this can be zero is, if