IM 8.4.14 Practice: Solving More Systems

Which equation, together with  , makes a system with one solution?

The system ,  has no solution. Change one constant or coefficient to make a new system with one solution.

Change one constant or coefficient to make a new system with an infinite number of solutions.

Graph A:

Graph B:

Graph C:

Graph D:

Here are two points: , . What is the slope of the line between them?