There are many different centres of a triangle. Learn about four of the main centres of a triangle: the centroid, circumcentre, orthocentre and incentre of a triangle. Practice finding these four centres.
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The scalar equation of a line is another way to represent a linear relationship. Learn more about the scalar form of the equation of a line and practice writing the scalar equation form of a line.
What are first differences? When given a function or a table of values representing a function, looking at the first difference can help you determine what kind of relationships there is between the variables and hence what function the points represent.
Learn about the cosine law. Practice using the cosine law to solve triangle and word problems.
Learn what x-intercepts and what y-intercepts of a function are. Learn how to locate the x and y intercepts of a function.