Revise how to plot a linear equation graph. Learn how to read x and y coordinates from a graph in this BBC Bitesize maths KS3 guide.

Assign the libref and set the graphics environment. COLORS= specifies the colors list. This list is used by the SYMBOL statement. HSIZE= and VSIZE= specify the external dimensions of the graph. Units ...

Graphs of two or more straight lines can be used to solve simultaneous linear equations. The graph of a straight line can be described using an equation close equationA mathematical statement ...