Search for tag: "function"

Domain of a rational function: Excluded values

Shows how to find out what values are not defined for a rational function. This ability will be needed when solving rational equations because you may come up with a value that is not valid when…

From  Tom Grant 7 plays 0  

Evaluating a rational function: Problem type 1

For an equation with f(x) equal to a rational expression, this shows how to write the substitution and simplification when putting in a particular value for x.

From  Tom Grant 7 plays 0  

Interpreting the graphs of two functions

Demonstates how to interpret a graph of a system of functions so that common questions that someone might have can be answered.

From  Tom Grant 36 plays 0  

Graphing a function of the form f (x) = ax + b: Fractional slope

Shows how thits form is simply the same as y = mx + b, and then writes the slope and y-intercpt down. It ends with using these to graph the line of points that satisfy this function.

From  Tom Grant 32 plays 0  

Finding intercepts of a nonlinear function given its graph

Just showiing how to locate and write down the x-intercepts and y-intecepts when looking at a graph

From  Tom Grant 16 plays 0  

Finding an output of a function from its graph

Simply demonstrates how to interpret function notation to understand what is being asked. In the example, the input is shown using function notatiion and the question asks for the function value or…

From  Tom Grant 8 plays 0  

Finding inputs and outputs of a two-step function that models a real-world situation: Function notation

Describes a situation that can be written as a function of the number of weeks a certain amount it saved and the resulting functional value is the amount still needed to be saved to buy something. …

From  Tom Grant 12 plays 0  

Variable expressions as inputs of functions: Problem type 1

Shows how to input an expression in place of the orignial variable input, and then simplify.

From  Tom Grant 9 plays 0  

Evaluating functions: Linear and quadratic or cubic

Speaks to the meaning of f(x), i.e. function notation. Then demnstrates how to get the value of two different functons given the input value.

From  Tom Grant 50 plays 0  

Table for a linear function

Describes how to find output values for a function given a list of iinput values and a table to complete a set of ordered pair values. Also mentions what function notation means and how to work with…

From  Tom Grant 9 plays 0  

Vertical Line Test

This demonstrates why and how to use vertical lines to test whether a graph of any relation is a function or not.

From  Tom Grant 22 plays 0  

Identifying functions from relations

Discussion of what relations and functions are and then some exapmles of how to indentify if a particular relation is more specifically a function.

From  Tom Grant 10 plays 0  

Interpreting the parameters of a linear function that models a real-world situation

Describes what the values in a linear relationship mean in a real situation.

From  Tom Grant 7 plays 0