Math Functions | MathHelp.com @yourteachermathhelp

Uploaded January 2016 | Updated September 2026, 2 weeks ago

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This lesson covers math functions. Students learn that if the x-coordinate is different in each ordered pair in a given relation, then the relation is a function. Students also learn to use mapping diagrams and the vertical line test to determine if a relation is a function.

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$Rational Equations | MathHelp.com Need a custom math course? Visit https://www.MathHelp.com. This lesson covers rational equations. Students learn that when solving rational equations, the first step is to factor each of the denominators, if possible, then multiply both sides of the equation by the common denominator for all the fractions in order to get rid of the fractions, and solve from here. Finally, check each solution to see if it makes a denominator in the original equation equal to zero. If so, then it cannot be a solution to the equation.$

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