hi would I solve equations such as
by factorising or using the quad formula, as I need to find where the above intersect on a graph.
This is just a simple simultaneous equation. There will of course be 2 intersection points. is a parabola and will intersect it at 2 points.
This is a quadratic, so factorise this equation and it will give you two points for . Put these back into the equation, and you will retrive the values for .