Mathematics for Chemistry/Plotting graphs

The properties of graphs The most basic relationship between two variables and is a straight line, a linear relationship. The variable is the gradient and is a constant which gives the intercept. The equations can be more complex than this including higher powers of , such as This is called a quadratic equation and it follows a shape called a parabola. High powers of can occur giving cubic, quartic and quintic equations. In general, as the power is increased, the line mapping the variables wiggles more, often cutting the -axis several times. Practice Plot between -3 and +2 in units of 1. Plot between -4 and +1 in units of 1. Plot between -5 and +4 in units of 1.