Monday, April 9th, 2012 at
12:16 pm

The Graph of an Equation The graph of an equation in two variables can be displayed on a coordinate plane. All ordered pairs (a,b) that are solutions of the equation are points on the graph. The graph of the equation is a set of all points that are solutions of the equation. To sketch a…

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Monday, April 9th, 2012 at
12:09 pm

Symmetry The graph of an equation may be symmetrical over the x-axis, the y-axis and/or the origin. Knowing if a graph is symmetrical helps make it easier to sketch the graph of an equation. To test for x-axis symmetry, you need to replace y with –y. If the new equation is identical to the original…

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Monday, April 9th, 2012 at
11:58 am

Finding the intercepts of an equation Finding the intercepts of an equation makes it easier to sketch the graph of the equation. The graph of some functions can have one intercept, more than one intercept or no intercepts. On the Cartesian Coordinate Plane, there are two types of intercepts. The point where the graph crosses…

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Saturday, March 3rd, 2012 at
10:49 pm

Knowing the type of graph by looking at the equation, makes it very easy to sketch a graph. The following is a list of examples of a variety of graphs. Equation Degree Name Shape Description 1. linear straight line / if x is +, \ if x is – 2. quadratic Parabola opens up if…

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