Draw the graph of \(y = x^2 -x – 4 \) and use it to find the roots of the equation to 1 decimal place. Draw and complete a table of values to find coordinates of points on the graph. x ...

Solving quadratic equations - Edexcel Graphs of quadratic functions. Solve quadratic equations by factorising, ... If the graph of the quadratic function \(y = ax^2 + bx + c \) crosses the x-axis, ...