Functions Progress June 1

Date

Question written down

Working vertically set out (line down centre)

Coordinates labelled with (x,y), not just either x or y

Graph constructed neatly

Working shown sequentially

Found and labelled 2 points to graph linear function (convention is to use intercepts)

Used discriminant to establish if it is necessary to find x intercepts of quadratic function

Found value of vertex of quadratic function

Found value of x-intercepts of quadratic function

Found y intercept of quadratic function

Equated the 2 functions to each other

Rearranged the 2 functions to solve (realising that solving this is different to finding x intercepts. This step is finding intersection points of the 2 functions)

Uses factorising methods to solve. Finds 2 values of x.

Substitutes x values into original equation to find corresponding y coordinates.

Checks solutions against graph created to ensure reasonableness.

Shows clearly in graph or sentence the coordinates of the intersection points

Reflects and writes comment about the parts of the process that are difficult