Search for tag: "values"

Solving a word problem using a quadratic equation with irrational roots

Shows how to substitite the given value for the output variable, then rearranges the resulting equation in standard form. Values for a, b, and c are identified and then entered into the quadratic…

From  Tom Grant 30 plays 0  

Graphing a parabola of the form y =- ax^2 + bs + c: Integer coefficients

Shows how to ofirst find the coordinates of the vertex, then choose other inputs to find two more points on each side of the vertex, plott them and draw the graph.

From  Tom Grant 5 plays 0  

Graphing a parabola ofthe form y = ax^2 or y = ax^2 + c

Shows how to shoose appropriatate input values to find five points, then plot them and draw the graph.

From  Tom Grant 6 plays 0  

Solving a system of linear equations using elimination with addition

This talks about why we need two equations to solve for two unknown values, and then demonstrates how to add two equations together to eliminate one varaible and solve for the other one, then find…

From  Tom Grant 12 plays 0  

Graphing a line given its equation in slope-intercept form: Integer slope

This explains how to use the slope and y-intercept to determine points on the line graph of a linear equation in two variables and then draws the straight line graph.

From  Tom Grant 10 plays 0  

Table for a linear equation

Shows how to find outputs for several inputs reslulting in a set of points (x, y)

From  Tom Grant 10 plays 0  

Evaluating an algebraic expression: Whole numbers with two operations

A quick demo about plugging in given values for variables and calculating a number result.

From  Tom Grant 6 plays 0  

Table for an exponential function

Shows how to plug in the given x--values and get values for f(x) = b^x

From  Tom Grant 5 plays 0  

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 15 plays 0  

Domain and range from the graph of a continuous function

Shows how to write the domain and range of a graph of an unbroken function with a starting point and an ending point.

From  Tom Grant 498 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 13 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 112 plays 0  

Finding the slopes of horizontal and vertical lines

Presents the use of the slope formulat we use to calculate the slopes of these special lines.

From  Tom Grant 24 plays 0