Search for tag: "direction"

Graph a line given by first finding its x- and y-intercepts

This video describes why the method for finding the intercepts works, then demonstrates finding the intercepts for an example equation and graphing its line.

From  Tom Grant 16 plays 0  

Graph a line given its equation in slope-intercept form: Fractional slope

Another demo on how to use the y-intercept to start a graph of a linear equation and then use the slope to find other points on the graph. It finishes with showing the line representing all of the…

From  Tom Grant 7 plays 0  

Reading a point in the coordinate plane

Just a short demo of how read the location of an (x, y) point on a Cartesian coordinate graph

From  Tom Grant 7 plays 0  

Solving a compound linear inequality: Graph solution, basic

Presents a compound inequality where both sides have to be solved for the variable first, and then shows how to graph the simplified results

From  Tom Grant 8 plays 0  

Union and intersection of intervals

A demonstration of how to deal with interpreting the union and intersection of two inequalities. For a more extensive and exhaustive demo, please view the videos entitled "Understanding…

From  Tom Grant 9 plays 0  

Graphing a compound inequality on the number line.

This presents how to graph two inequalities that are connected by either the word "or" or the word "and"

From  Tom Grant 7 plays 0  

Solving a linear equation with several occurrences of the variable: Variables on both sides and distribution

A somewhat fancierversion of seveal solving equation versions that should help solidify the process in your mind.

From  Tom Grant 10 plays 0  

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

This shows how to find the vertex of a parabola and then calculate the matching points one unit and two units to the left and right of hte axis of symmetry

From  Tom Grant 20 plays 0  

Solving a rational equation that simplifies to linear: Like binomial denominators

This has two examples so that you can learn to watch out for what looks like a solution but is not because it creates division by zero if you check the answer in the original equation. The other…

From  Tom Grant 9 plays 0  

Word problem involving the Pythagorean Theorem

Application of the equation relating the three sides of a right triangle:: a^2 + b^2 = c^2 where a and b are the shorter sides that make the rigiht angle and c is the lenght of the longest side.

From  Tom Grant 17 plays 0  

Simplifying a sum or difference of three univariate polynomials

The key to getting this type of question is distributing any minus sign on the outside of the parentheses to each term on the inside thereby changing all of the i nner signs to their opposite

From  Tom Grant 30 plays 0  

Power of 10: Negative exponent

Negative powers of 10 means that they are very small fractions.

From  Tom Grant 17 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 17 plays 0  

Writing equations of lines parallel and perpendicular to a given line through a point

Need the videos for finding tej slopes of parallel and perpendicular lines before viewing this one. This shows how to get the infromation needed for fulling in the point-slope form. You can leave…

From  Tom Grant 26 plays 0  

Graphing a line through a given point with a given slope

Consists of locating the given point and then using the slope to find other points along a l line, then lastly drawing the line.

From  Tom Grant 8 plays 0  

Graphing a line given its slope and y-intercept

Demonstrates how to start at the y-initercept point on the grid and then use the slope to find other points on the line graph.

From  Tom Grant 28 plays 0