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.
curriculum: Grade 9
35 posts
Learn about parallel lines and their properties. How are the slopes of parallel lines related? Practice finding the equations of parallel lines.
Learn how to find the slope of a line perpendicular to a given line. Practice finding the equation of a line perpendicular to a given line.
Learn what the slope intercept form of a line in the Cartesian plane is. Practicing finding the equation of lines in the plane.
Learn what the slope of a line is in the Cartesian plane, . Practice finding the slope of lines.
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.
Practice using the sine law and the cosine law through word problems.