We have explored the changes in the
graph ofwhen a, b, and c vary individually.
What happens when two or more of a, b, or c affect the sine graph
at the same time?

Use your knowledge of changes in a,
b, and c to predict the sine curves of the following equations.
Click on the equation to reveal its graph and an explanation of
how the graph changes. Try to graph the equations yourself before
checking the solutions.

Examples changing two values of a, b,
or c:

CClick
on an equation to see its graph!

Examples where the values of all three
of a, b, and c have been changed:

Can you write the equation for
the sine graph below? What are the values of a, b, and c? Solution