Sketching a quadratic graph using factors If a quadratic equation can be factorised close factorise To put an expression into brackets. For example, 18x + 12y = 6(3x + 2y).

Find the intervals where the graph of \(f\) is increasing or decreasing, and locations and values of the local maxima and minima. Find the intervals where the the graph of \(f\) is concave upward or ...

GCSE; OCR; Other graphs - OCR Sketching graphs. The most commonly occurring graphs are quadratic, cubic, reciprocal, exponential and circle graphs. Their equations can be used to plot their shape.