One.
one solution
one solution
one solution
there are 4 intersecting lines
There are 20 common points.
A minimum of two.
They have an infinite number of solutions.
3 intersecting lines, because none of the three points are right angles.
2
it has 2
If the equations are linear, they may have no common solutions, one common solutions, or infinitely many solutions. Graphically, in the simplest case you have two straight lines; these can be parallel, intersect in a same point, or actually be the same line. If the equations are non-linear, they may have any amount of solutions. For example, two different intersecting ellipses may intersect in up to four points.
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