Straight-line graphs of logarithmic and exponential functions Watch this video to learn about straight line graphs of logarithmic and exponential functions.

GCSE Eduqas Other Graphs - Eduqas The equation of the tangent to a circle - Higher The most commonly occurring graphs are quadratic, cubic, reciprocal, exponential and circle graphs.

For example, in the right hand graph of Figure 2 is a population of Paramecium growing in a laboratory culture. The pattern of growth is very close to the pattern of the exponential equation.