Solving Equations Graphically (Cambridge (CIE) AS Maths) : Revision Note

Solving Equations Graphically

Solving (simultaneous) equations graphically

• This is a way to solve simultaneous equations (see Simultaneous Equations)

• Coordinates of the intersections are the solutions

How do I solve simultaneous equations using a graph?

• Use graphs and algebra together

• Sketch a graph if it has not been given

• Read/interpret a graph if it has been given

• It can be difficult to tell from a sketch if graphs intersect once, more, or not at all